Home / 129,825.34-179,160.30-72,470.04

Finding the Fourth Proportional to 129,825.34, 179,160.30 and 72,470.04

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Solution

The fourth proportional to 129,825.34, 179,160.30 and 72,470.04 is: 100,009.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,825.34 : 179,160.30 = 72,470.04 : x
  2. Step 2: Convert to fraction form
    129,825.34/179,160.30 = 72,470.04/x
  3. Step 3: Cross multiply
    129,825.34x = 179,160.30 × 72,470.04
  4. Step 4: Simplify right side
    129,825.34x = 12,983,754,107.41
  5. Step 5: Solve for x
    x = 12,983,754,107.41/129,825.34
  6. Step 6: Final answer
    x = 100,009.40

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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.