Home / 129,717.93-178,937.19-81,888.24

Finding the Fourth Proportional to 129,717.93, 178,937.19 and 81,888.24

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Solution

The fourth proportional to 129,717.93, 178,937.19 and 81,888.24 is: 112,959.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,717.93 : 178,937.19 = 81,888.24 : x
  2. Step 2: Convert to fraction form
    129,717.93/178,937.19 = 81,888.24/x
  3. Step 3: Cross multiply
    129,717.93x = 178,937.19 × 81,888.24
  4. Step 4: Simplify right side
    129,717.93x = 14,652,851,559.65
  5. Step 5: Solve for x
    x = 14,652,851,559.65/129,717.93
  6. Step 6: Final answer
    x = 112,959.34

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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.