Home / 129,600.95-178,850.12-72,243.91

Finding the Fourth Proportional to 129,600.95, 178,850.12 and 72,243.91

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Solution

The fourth proportional to 129,600.95, 178,850.12 and 72,243.91 is: 99,697.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,600.95 : 178,850.12 = 72,243.91 : x
  2. Step 2: Convert to fraction form
    129,600.95/178,850.12 = 72,243.91/x
  3. Step 3: Cross multiply
    129,600.95x = 178,850.12 × 72,243.91
  4. Step 4: Simplify right side
    129,600.95x = 12,920,831,535.28
  5. Step 5: Solve for x
    x = 12,920,831,535.28/129,600.95
  6. Step 6: Final answer
    x = 99,697.05

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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.