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Finding the Fourth Proportional to 81,427,326,443.90, 121,968,996,987.45 and 81,427,326,443.90

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Solution

The fourth proportional to 81,427,326,443.90, 121,968,996,987.45 and 81,427,326,443.90 is: 121,968,996,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,427,326,443.90 : 121,968,996,987.45 = 81,427,326,443.90 : x
  2. Step 2: Convert to fraction form
    81,427,326,443.90/121,968,996,987.45 = 81,427,326,443.90/x
  3. Step 3: Cross multiply
    81,427,326,443.90x = 121,968,996,987.45 × 81,427,326,443.90
  4. Step 4: Simplify right side
    81,427,326,443.90x = 9,931,609,333,732,145,627,136
  5. Step 5: Solve for x
    x = 9,931,609,333,732,145,627,136/81,427,326,443.90
  6. Step 6: Final answer
    x = 121,968,996,987.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.