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Finding the Fourth Proportional to 141,807.60, 212,711.40 and 71,677.80

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Solution

The fourth proportional to 141,807.60, 212,711.40 and 71,677.80 is: 107,516.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,807.60 : 212,711.40 = 71,677.80 : x
  2. Step 2: Convert to fraction form
    141,807.60/212,711.40 = 71,677.80/x
  3. Step 3: Cross multiply
    141,807.60x = 212,711.40 × 71,677.80
  4. Step 4: Simplify right side
    141,807.60x = 15,246,685,186.92
  5. Step 5: Solve for x
    x = 15,246,685,186.92/141,807.60
  6. Step 6: Final answer
    x = 107,516.70

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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.