Home / 125,316.32-172,920.51-71,604.81

Finding the Fourth Proportional to 125,316.32, 172,920.51 and 71,604.81

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Solution

The fourth proportional to 125,316.32, 172,920.51 and 71,604.81 is: 98,805.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,316.32 : 172,920.51 = 71,604.81 : x
  2. Step 2: Convert to fraction form
    125,316.32/172,920.51 = 71,604.81/x
  3. Step 3: Cross multiply
    125,316.32x = 172,920.51 × 71,604.81
  4. Step 4: Simplify right side
    125,316.32x = 12,381,940,263.65
  5. Step 5: Solve for x
    x = 12,381,940,263.65/125,316.32
  6. Step 6: Final answer
    x = 98,805.49

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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.