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Finding the Fourth Proportional to 88,686.90, 133,030.35 and 68,858.10

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Solution

The fourth proportional to 88,686.90, 133,030.35 and 68,858.10 is: 103,287.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,686.90 : 133,030.35 = 68,858.10 : x
  2. Step 2: Convert to fraction form
    88,686.90/133,030.35 = 68,858.10/x
  3. Step 3: Cross multiply
    88,686.90x = 133,030.35 × 68,858.10
  4. Step 4: Simplify right side
    88,686.90x = 9,160,217,143.34
  5. Step 5: Solve for x
    x = 9,160,217,143.34/88,686.90
  6. Step 6: Final answer
    x = 103,287.15

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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.