Home / 89,407.85-134,136.88-72,726.17

Finding the Fourth Proportional to 89,407.85, 134,136.88 and 72,726.17

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Solution

The fourth proportional to 89,407.85, 134,136.88 and 72,726.17 is: 109,109.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,407.85 : 134,136.88 = 72,726.17 : x
  2. Step 2: Convert to fraction form
    89,407.85/134,136.88 = 72,726.17/x
  3. Step 3: Cross multiply
    89,407.85x = 134,136.88 × 72,726.17
  4. Step 4: Simplify right side
    89,407.85x = 9,755,260,685.65
  5. Step 5: Solve for x
    x = 9,755,260,685.65/89,407.85
  6. Step 6: Final answer
    x = 109,109.67

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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.