Home / 137,681.46-206,189.55-78,337.35

Finding the Fourth Proportional to 137,681.46, 206,189.55 and 78,337.35

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Solution

The fourth proportional to 137,681.46, 206,189.55 and 78,337.35 is: 117,316.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,681.46 : 206,189.55 = 78,337.35 : x
  2. Step 2: Convert to fraction form
    137,681.46/206,189.55 = 78,337.35/x
  3. Step 3: Cross multiply
    137,681.46x = 206,189.55 × 78,337.35
  4. Step 4: Simplify right side
    137,681.46x = 16,152,342,944.69
  5. Step 5: Solve for x
    x = 16,152,342,944.69/137,681.46
  6. Step 6: Final answer
    x = 117,316.76

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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.