Home / 143,587.12-215,380.80-45,091.12

Finding the Fourth Proportional to 143,587.12, 215,380.80 and 45,091.12

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Solution

The fourth proportional to 143,587.12, 215,380.80 and 45,091.12 is: 67,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,587.12 : 215,380.80 = 45,091.12 : x
  2. Step 2: Convert to fraction form
    143,587.12/215,380.80 = 45,091.12/x
  3. Step 3: Cross multiply
    143,587.12x = 215,380.80 × 45,091.12
  4. Step 4: Simplify right side
    143,587.12x = 9,711,761,498.50
  5. Step 5: Solve for x
    x = 9,711,761,498.50/143,587.12
  6. Step 6: Final answer
    x = 67,636.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.