Home / 129,350.88-178,503.54-72,762.66

Finding the Fourth Proportional to 129,350.88, 178,503.54 and 72,762.66

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Solution

The fourth proportional to 129,350.88, 178,503.54 and 72,762.66 is: 100,412.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,350.88 : 178,503.54 = 72,762.66 : x
  2. Step 2: Convert to fraction form
    129,350.88/178,503.54 = 72,762.66/x
  3. Step 3: Cross multiply
    129,350.88x = 178,503.54 × 72,762.66
  4. Step 4: Simplify right side
    129,350.88x = 12,988,392,389.82
  5. Step 5: Solve for x
    x = 12,988,392,389.82/129,350.88
  6. Step 6: Final answer
    x = 100,412.09

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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.