Home / 129,295.02-178,429.30-71,938.92

Finding the Fourth Proportional to 129,295.02, 178,429.30 and 71,938.92

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Solution

The fourth proportional to 129,295.02, 178,429.30 and 71,938.92 is: 99,276.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,295.02 : 178,429.30 = 71,938.92 : x
  2. Step 2: Convert to fraction form
    129,295.02/178,429.30 = 71,938.92/x
  3. Step 3: Cross multiply
    129,295.02x = 178,429.30 × 71,938.92
  4. Step 4: Simplify right side
    129,295.02x = 12,836,011,138.36
  5. Step 5: Solve for x
    x = 12,836,011,138.36/129,295.02
  6. Step 6: Final answer
    x = 99,276.92

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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.