Home / 129,453.91-178,701.63-87,037.04

Finding the Fourth Proportional to 129,453.91, 178,701.63 and 87,037.04

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Solution

The fourth proportional to 129,453.91, 178,701.63 and 87,037.04 is: 120,148.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,453.91 : 178,701.63 = 87,037.04 : x
  2. Step 2: Convert to fraction form
    129,453.91/178,701.63 = 87,037.04/x
  3. Step 3: Cross multiply
    129,453.91x = 178,701.63 × 87,037.04
  4. Step 4: Simplify right side
    129,453.91x = 15,553,661,038.74
  5. Step 5: Solve for x
    x = 15,553,661,038.74/129,453.91
  6. Step 6: Final answer
    x = 120,148.25

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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.