Home / 131,113.92-180,934.86-76,671.29

Finding the Fourth Proportional to 131,113.92, 180,934.86 and 76,671.29

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Solution

The fourth proportional to 131,113.92, 180,934.86 and 76,671.29 is: 105,805.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,113.92 : 180,934.86 = 76,671.29 : x
  2. Step 2: Convert to fraction form
    131,113.92/180,934.86 = 76,671.29/x
  3. Step 3: Cross multiply
    131,113.92x = 180,934.86 × 76,671.29
  4. Step 4: Simplify right side
    131,113.92x = 13,872,509,862.02
  5. Step 5: Solve for x
    x = 13,872,509,862.02/131,113.92
  6. Step 6: Final answer
    x = 105,805.01

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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.