Home / 129,812.15-179,140.85-71,668.93

Finding the Fourth Proportional to 129,812.15, 179,140.85 and 71,668.93

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Solution

The fourth proportional to 129,812.15, 179,140.85 and 71,668.93 is: 98,903.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,812.15 : 179,140.85 = 71,668.93 : x
  2. Step 2: Convert to fraction form
    129,812.15/179,140.85 = 71,668.93/x
  3. Step 3: Cross multiply
    129,812.15x = 179,140.85 × 71,668.93
  4. Step 4: Simplify right side
    129,812.15x = 12,838,832,837.24
  5. Step 5: Solve for x
    x = 12,838,832,837.24/129,812.15
  6. Step 6: Final answer
    x = 98,903.17

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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.