Home / 129,884.60-179,270.63-76,186.91

Finding the Fourth Proportional to 129,884.60, 179,270.63 and 76,186.91

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Solution

The fourth proportional to 129,884.60, 179,270.63 and 76,186.91 is: 105,155.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,884.60 : 179,270.63 = 76,186.91 : x
  2. Step 2: Convert to fraction form
    129,884.60/179,270.63 = 76,186.91/x
  3. Step 3: Cross multiply
    129,884.60x = 179,270.63 × 76,186.91
  4. Step 4: Simplify right side
    129,884.60x = 13,658,074,076.17
  5. Step 5: Solve for x
    x = 13,658,074,076.17/129,884.60
  6. Step 6: Final answer
    x = 105,155.46

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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.