Home / 128,133.74-176,825.22-71,545.52

Finding the Fourth Proportional to 128,133.74, 176,825.22 and 71,545.52

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Solution

The fourth proportional to 128,133.74, 176,825.22 and 71,545.52 is: 98,733.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,133.74 : 176,825.22 = 71,545.52 : x
  2. Step 2: Convert to fraction form
    128,133.74/176,825.22 = 71,545.52/x
  3. Step 3: Cross multiply
    128,133.74x = 176,825.22 × 71,545.52
  4. Step 4: Simplify right side
    128,133.74x = 12,651,052,314.01
  5. Step 5: Solve for x
    x = 12,651,052,314.01/128,133.74
  6. Step 6: Final answer
    x = 98,733.19

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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.