Home / 129,026.92-178,052.58-72,440.68

Finding the Fourth Proportional to 129,026.92, 178,052.58 and 72,440.68

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Solution

The fourth proportional to 129,026.92, 178,052.58 and 72,440.68 is: 99,965.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,026.92 : 178,052.58 = 72,440.68 : x
  2. Step 2: Convert to fraction form
    129,026.92/178,052.58 = 72,440.68/x
  3. Step 3: Cross multiply
    129,026.92x = 178,052.58 × 72,440.68
  4. Step 4: Simplify right side
    129,026.92x = 12,898,249,970.95
  5. Step 5: Solve for x
    x = 12,898,249,970.95/129,026.92
  6. Step 6: Final answer
    x = 99,965.57

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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.