Home / 129,073.83-178,120.58-70,931.52

Finding the Fourth Proportional to 129,073.83, 178,120.58 and 70,931.52

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Solution

The fourth proportional to 129,073.83, 178,120.58 and 70,931.52 is: 97,884.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,073.83 : 178,120.58 = 70,931.52 : x
  2. Step 2: Convert to fraction form
    129,073.83/178,120.58 = 70,931.52/x
  3. Step 3: Cross multiply
    129,073.83x = 178,120.58 × 70,931.52
  4. Step 4: Simplify right side
    129,073.83x = 12,634,363,482.68
  5. Step 5: Solve for x
    x = 12,634,363,482.68/129,073.83
  6. Step 6: Final answer
    x = 97,884.78

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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.