Home / 123,715.56-170,726.76-67,125.72

Finding the Fourth Proportional to 123,715.56, 170,726.76 and 67,125.72

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Solution

The fourth proportional to 123,715.56, 170,726.76 and 67,125.72 is: 92,633.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,715.56 : 170,726.76 = 67,125.72 : x
  2. Step 2: Convert to fraction form
    123,715.56/170,726.76 = 67,125.72/x
  3. Step 3: Cross multiply
    123,715.56x = 170,726.76 × 67,125.72
  4. Step 4: Simplify right side
    123,715.56x = 11,460,156,688.27
  5. Step 5: Solve for x
    x = 11,460,156,688.27/123,715.56
  6. Step 6: Final answer
    x = 92,633.11

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1.5x scale

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.