Home / 91,487.07-137,312.62-76,587.45

Finding the Fourth Proportional to 91,487.07, 137,312.62 and 76,587.45

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Solution

The fourth proportional to 91,487.07, 137,312.62 and 76,587.45 is: 114,949.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,487.07 : 137,312.62 = 76,587.45 : x
  2. Step 2: Convert to fraction form
    91,487.07/137,312.62 = 76,587.45/x
  3. Step 3: Cross multiply
    91,487.07x = 137,312.62 × 76,587.45
  4. Step 4: Simplify right side
    91,487.07x = 10,516,423,418.62
  5. Step 5: Solve for x
    x = 10,516,423,418.62/91,487.07
  6. Step 6: Final answer
    x = 114,949.83

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1.5x scale

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.