Home / 128,011.05-176,626.98-74,264.92

Finding the Fourth Proportional to 128,011.05, 176,626.98 and 74,264.92

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Solution

The fourth proportional to 128,011.05, 176,626.98 and 74,264.92 is: 102,469.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,011.05 : 176,626.98 = 74,264.92 : x
  2. Step 2: Convert to fraction form
    128,011.05/176,626.98 = 74,264.92/x
  3. Step 3: Cross multiply
    128,011.05x = 176,626.98 × 74,264.92
  4. Step 4: Simplify right side
    128,011.05x = 13,117,188,097.97
  5. Step 5: Solve for x
    x = 13,117,188,097.97/128,011.05
  6. Step 6: Final answer
    x = 102,469.19

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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.