Home / 129,373.17-178,518.07-72,014.90

Finding the Fourth Proportional to 129,373.17, 178,518.07 and 72,014.90

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Solution

The fourth proportional to 129,373.17, 178,518.07 and 72,014.90 is: 99,371.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,373.17 : 178,518.07 = 72,014.90 : x
  2. Step 2: Convert to fraction form
    129,373.17/178,518.07 = 72,014.90/x
  3. Step 3: Cross multiply
    129,373.17x = 178,518.07 × 72,014.90
  4. Step 4: Simplify right side
    129,373.17x = 12,855,961,495.56
  5. Step 5: Solve for x
    x = 12,855,961,495.56/129,373.17
  6. Step 6: Final answer
    x = 99,371.16

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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.