Home / 129,801.22-179,128.02-76,124.95

Finding the Fourth Proportional to 129,801.22, 179,128.02 and 76,124.95

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Solution

The fourth proportional to 129,801.22, 179,128.02 and 76,124.95 is: 105,053.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,801.22 : 179,128.02 = 76,124.95 : x
  2. Step 2: Convert to fraction form
    129,801.22/179,128.02 = 76,124.95/x
  3. Step 3: Cross multiply
    129,801.22x = 179,128.02 × 76,124.95
  4. Step 4: Simplify right side
    129,801.22x = 13,636,111,647.27
  5. Step 5: Solve for x
    x = 13,636,111,647.27/129,801.22
  6. Step 6: Final answer
    x = 105,053.80

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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.