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Finding the Fourth Proportional to 113,402.69, 169,688.80 and 107,319.52

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Solution

The fourth proportional to 113,402.69, 169,688.80 and 107,319.52 is: 160,586.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,402.69 : 169,688.80 = 107,319.52 : x
  2. Step 2: Convert to fraction form
    113,402.69/169,688.80 = 107,319.52/x
  3. Step 3: Cross multiply
    113,402.69x = 169,688.80 × 107,319.52
  4. Step 4: Simplify right side
    113,402.69x = 18,210,920,565.38
  5. Step 5: Solve for x
    x = 18,210,920,565.38/113,402.69
  6. Step 6: Final answer
    x = 160,586.32

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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.