Home / 129,244.08-178,355.28-72,655.50

Finding the Fourth Proportional to 129,244.08, 178,355.28 and 72,655.50

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Solution

The fourth proportional to 129,244.08, 178,355.28 and 72,655.50 is: 100,263.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,244.08 : 178,355.28 = 72,655.50 : x
  2. Step 2: Convert to fraction form
    129,244.08/178,355.28 = 72,655.50/x
  3. Step 3: Cross multiply
    129,244.08x = 178,355.28 × 72,655.50
  4. Step 4: Simplify right side
    129,244.08x = 12,958,492,046.04
  5. Step 5: Solve for x
    x = 12,958,492,046.04/129,244.08
  6. Step 6: Final answer
    x = 100,263.72

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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.