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Finding the Fourth Proportional to 129,965.40, 194,948.10 and 59,981.40

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Solution

The fourth proportional to 129,965.40, 194,948.10 and 59,981.40 is: 89,972.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,965.40 : 194,948.10 = 59,981.40 : x
  2. Step 2: Convert to fraction form
    129,965.40/194,948.10 = 59,981.40/x
  3. Step 3: Cross multiply
    129,965.40x = 194,948.10 × 59,981.40
  4. Step 4: Simplify right side
    129,965.40x = 11,693,259,965.34
  5. Step 5: Solve for x
    x = 11,693,259,965.34/129,965.40
  6. Step 6: Final answer
    x = 89,972.10

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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.