Home / 129,549.88-178,774.09-72,186.24

Finding the Fourth Proportional to 129,549.88, 178,774.09 and 72,186.24

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Solution

The fourth proportional to 129,549.88, 178,774.09 and 72,186.24 is: 99,614.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,549.88 : 178,774.09 = 72,186.24 : x
  2. Step 2: Convert to fraction form
    129,549.88/178,774.09 = 72,186.24/x
  3. Step 3: Cross multiply
    129,549.88x = 178,774.09 × 72,186.24
  4. Step 4: Simplify right side
    129,549.88x = 12,905,029,366.52
  5. Step 5: Solve for x
    x = 12,905,029,366.52/129,549.88
  6. Step 6: Final answer
    x = 99,614.37

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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.