Home / 129,945.40-179,322.71-72,585.52

Finding the Fourth Proportional to 129,945.40, 179,322.71 and 72,585.52

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Solution

The fourth proportional to 129,945.40, 179,322.71 and 72,585.52 is: 100,166.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,945.40 : 179,322.71 = 72,585.52 : x
  2. Step 2: Convert to fraction form
    129,945.40/179,322.71 = 72,585.52/x
  3. Step 3: Cross multiply
    129,945.40x = 179,322.71 × 72,585.52
  4. Step 4: Simplify right side
    129,945.40x = 13,016,232,153.16
  5. Step 5: Solve for x
    x = 13,016,232,153.16/129,945.40
  6. Step 6: Final answer
    x = 100,166.93

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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.