Home / 140,217.40-210,326.10-87,686.20

Finding the Fourth Proportional to 140,217.40, 210,326.10 and 87,686.20

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Solution

The fourth proportional to 140,217.40, 210,326.10 and 87,686.20 is: 131,529.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,217.40 : 210,326.10 = 87,686.20 : x
  2. Step 2: Convert to fraction form
    140,217.40/210,326.10 = 87,686.20/x
  3. Step 3: Cross multiply
    140,217.40x = 210,326.10 × 87,686.20
  4. Step 4: Simplify right side
    140,217.40x = 18,442,696,469.82
  5. Step 5: Solve for x
    x = 18,442,696,469.82/140,217.40
  6. Step 6: Final answer
    x = 131,529.30

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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.