Home / 129,320.12-178,435.01-75,594.74

Finding the Fourth Proportional to 129,320.12, 178,435.01 and 75,594.74

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Solution

The fourth proportional to 129,320.12, 178,435.01 and 75,594.74 is: 104,305.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,320.12 : 178,435.01 = 75,594.74 : x
  2. Step 2: Convert to fraction form
    129,320.12/178,435.01 = 75,594.74/x
  3. Step 3: Cross multiply
    129,320.12x = 178,435.01 × 75,594.74
  4. Step 4: Simplify right side
    129,320.12x = 13,488,746,917.70
  5. Step 5: Solve for x
    x = 13,488,746,917.70/129,320.12
  6. Step 6: Final answer
    x = 104,305.10

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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.