Home / 129,166.26-178,254.72-72,577.50

Finding the Fourth Proportional to 129,166.26, 178,254.72 and 72,577.50

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Solution

The fourth proportional to 129,166.26, 178,254.72 and 72,577.50 is: 100,159.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,166.26 : 178,254.72 = 72,577.50 : x
  2. Step 2: Convert to fraction form
    129,166.26/178,254.72 = 72,577.50/x
  3. Step 3: Cross multiply
    129,166.26x = 178,254.72 × 72,577.50
  4. Step 4: Simplify right side
    129,166.26x = 12,937,281,940.80
  5. Step 5: Solve for x
    x = 12,937,281,940.80/129,166.26
  6. Step 6: Final answer
    x = 100,159.92

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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.