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Finding the Fourth Proportional to 134,871.70, 202,307.55 and 85,008.10

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Solution

The fourth proportional to 134,871.70, 202,307.55 and 85,008.10 is: 127,512.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,871.70 : 202,307.55 = 85,008.10 : x
  2. Step 2: Convert to fraction form
    134,871.70/202,307.55 = 85,008.10/x
  3. Step 3: Cross multiply
    134,871.70x = 202,307.55 × 85,008.10
  4. Step 4: Simplify right side
    134,871.70x = 17,197,780,441.16
  5. Step 5: Solve for x
    x = 17,197,780,441.16/134,871.70
  6. Step 6: Final answer
    x = 127,512.15

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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.