Home / 129,406.60-178,576.11-72,048.17

Finding the Fourth Proportional to 129,406.60, 178,576.11 and 72,048.17

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Solution

The fourth proportional to 129,406.60, 178,576.11 and 72,048.17 is: 99,423.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,406.60 : 178,576.11 = 72,048.17 : x
  2. Step 2: Convert to fraction form
    129,406.60/178,576.11 = 72,048.17/x
  3. Step 3: Cross multiply
    129,406.60x = 178,576.11 × 72,048.17
  4. Step 4: Simplify right side
    129,406.60x = 12,866,081,931.22
  5. Step 5: Solve for x
    x = 12,866,081,931.22/129,406.60
  6. Step 6: Final answer
    x = 99,423.69

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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.