Home / 128,140.56-176,825.16-71,544.24

Finding the Fourth Proportional to 128,140.56, 176,825.16 and 71,544.24

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Solution

The fourth proportional to 128,140.56, 176,825.16 and 71,544.24 is: 98,726.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,140.56 : 176,825.16 = 71,544.24 : x
  2. Step 2: Convert to fraction form
    128,140.56/176,825.16 = 71,544.24/x
  3. Step 3: Cross multiply
    128,140.56x = 176,825.16 × 71,544.24
  4. Step 4: Simplify right side
    128,140.56x = 12,650,821,685.08
  5. Step 5: Solve for x
    x = 12,650,821,685.08/128,140.56
  6. Step 6: Final answer
    x = 98,726.13

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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.