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Finding the Fourth Proportional to 102,201.40, 153,302.10 and 89,079.40

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Solution

The fourth proportional to 102,201.40, 153,302.10 and 89,079.40 is: 133,619.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,201.40 : 153,302.10 = 89,079.40 : x
  2. Step 2: Convert to fraction form
    102,201.40/153,302.10 = 89,079.40/x
  3. Step 3: Cross multiply
    102,201.40x = 153,302.10 × 89,079.40
  4. Step 4: Simplify right side
    102,201.40x = 13,656,059,086.74
  5. Step 5: Solve for x
    x = 13,656,059,086.74/102,201.40
  6. Step 6: Final answer
    x = 133,619.10

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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.