Home / 129,408.60-178,681.17-127,341.90

Finding the Fourth Proportional to 129,408.60, 178,681.17 and 127,341.90

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Solution

The fourth proportional to 129,408.60, 178,681.17 and 127,341.90 is: 175,827.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,408.60 : 178,681.17 = 127,341.90 : x
  2. Step 2: Convert to fraction form
    129,408.60/178,681.17 = 127,341.90/x
  3. Step 3: Cross multiply
    129,408.60x = 178,681.17 × 127,341.90
  4. Step 4: Simplify right side
    129,408.60x = 22,753,599,682.02
  5. Step 5: Solve for x
    x = 22,753,599,682.02/129,408.60
  6. Step 6: Final answer
    x = 175,827.57

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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.