Home / 127,791.10-176,381.77-79,429.55

Finding the Fourth Proportional to 127,791.10, 176,381.77 and 79,429.55

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Solution

The fourth proportional to 127,791.10, 176,381.77 and 79,429.55 is: 109,631.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,791.10 : 176,381.77 = 79,429.55 : x
  2. Step 2: Convert to fraction form
    127,791.10/176,381.77 = 79,429.55/x
  3. Step 3: Cross multiply
    127,791.10x = 176,381.77 × 79,429.55
  4. Step 4: Simplify right side
    127,791.10x = 14,009,924,861.68
  5. Step 5: Solve for x
    x = 14,009,924,861.68/127,791.10
  6. Step 6: Final answer
    x = 109,631.46

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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.