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Finding the Fourth Proportional to 132,363, 198,459.40 and 87,332.32

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Solution

The fourth proportional to 132,363, 198,459.40 and 87,332.32 is: 130,942.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,363 : 198,459.40 = 87,332.32 : x
  2. Step 2: Convert to fraction form
    132,363/198,459.40 = 87,332.32/x
  3. Step 3: Cross multiply
    132,363x = 198,459.40 × 87,332.32
  4. Step 4: Simplify right side
    132,363x = 17,331,919,827.81
  5. Step 5: Solve for x
    x = 17,331,919,827.81/132,363
  6. Step 6: Final answer
    x = 130,942.33

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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.