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Finding the Fourth Proportional to 139,968,281.80, 209,952,422.70 and 96,130,304.20

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Solution

The fourth proportional to 139,968,281.80, 209,952,422.70 and 96,130,304.20 is: 144,195,456.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,281.80 : 209,952,422.70 = 96,130,304.20 : x
  2. Step 2: Convert to fraction form
    139,968,281.80/209,952,422.70 = 96,130,304.20/x
  3. Step 3: Cross multiply
    139,968,281.80x = 209,952,422.70 × 96,130,304.20
  4. Step 4: Simplify right side
    139,968,281.80x = 20,182,790,261,677,984
  5. Step 5: Solve for x
    x = 20,182,790,261,677,984/139,968,281.80
  6. Step 6: Final answer
    x = 144,195,456.30

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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.