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Finding the Fourth Proportional to 119,737.71, 165,156.30 and 87,415.74

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Solution

The fourth proportional to 119,737.71, 165,156.30 and 87,415.74 is: 120,574.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,737.71 : 165,156.30 = 87,415.74 : x
  2. Step 2: Convert to fraction form
    119,737.71/165,156.30 = 87,415.74/x
  3. Step 3: Cross multiply
    119,737.71x = 165,156.30 × 87,415.74
  4. Step 4: Simplify right side
    119,737.71x = 14,437,260,180.16
  5. Step 5: Solve for x
    x = 14,437,260,180.16/119,737.71
  6. Step 6: Final answer
    x = 120,574.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.