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Finding the Fourth Proportional to 100,732.38, 151,030.41 and 56,389.74

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Solution

The fourth proportional to 100,732.38, 151,030.41 and 56,389.74 is: 84,546.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,732.38 : 151,030.41 = 56,389.74 : x
  2. Step 2: Convert to fraction form
    100,732.38/151,030.41 = 56,389.74/x
  3. Step 3: Cross multiply
    100,732.38x = 151,030.41 × 56,389.74
  4. Step 4: Simplify right side
    100,732.38x = 8,516,565,551.99
  5. Step 5: Solve for x
    x = 8,516,565,551.99/100,732.38
  6. Step 6: Final answer
    x = 84,546.45

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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.