Home / 129,875.13-179,225.92-72,515.34

Finding the Fourth Proportional to 129,875.13, 179,225.92 and 72,515.34

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Solution

The fourth proportional to 129,875.13, 179,225.92 and 72,515.34 is: 100,070.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,875.13 : 179,225.92 = 72,515.34 : x
  2. Step 2: Convert to fraction form
    129,875.13/179,225.92 = 72,515.34/x
  3. Step 3: Cross multiply
    129,875.13x = 179,225.92 × 72,515.34
  4. Step 4: Simplify right side
    129,875.13x = 12,996,628,525.61
  5. Step 5: Solve for x
    x = 12,996,628,525.61/129,875.13
  6. Step 6: Final answer
    x = 100,070.19

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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.