Home / 129,491.76-178,712.28-75,794.16

Finding the Fourth Proportional to 129,491.76, 178,712.28 and 75,794.16

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Solution

The fourth proportional to 129,491.76, 178,712.28 and 75,794.16 is: 104,603.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,491.76 : 178,712.28 = 75,794.16 : x
  2. Step 2: Convert to fraction form
    129,491.76/178,712.28 = 75,794.16/x
  3. Step 3: Cross multiply
    129,491.76x = 178,712.28 × 75,794.16
  4. Step 4: Simplify right side
    129,491.76x = 13,545,347,144.28
  5. Step 5: Solve for x
    x = 13,545,347,144.28/129,491.76
  6. Step 6: Final answer
    x = 104,603.93

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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.