Home / 130,121.61-179,569.22-76,407.27

Finding the Fourth Proportional to 130,121.61, 179,569.22 and 76,407.27

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Solution

The fourth proportional to 130,121.61, 179,569.22 and 76,407.27 is: 105,442.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,121.61 : 179,569.22 = 76,407.27 : x
  2. Step 2: Convert to fraction form
    130,121.61/179,569.22 = 76,407.27/x
  3. Step 3: Cross multiply
    130,121.61x = 179,569.22 × 76,407.27
  4. Step 4: Simplify right side
    130,121.61x = 13,720,393,494.19
  5. Step 5: Solve for x
    x = 13,720,393,494.19/130,121.61
  6. Step 6: Final answer
    x = 105,442.85

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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.