Home / 145,143.72-200,320.20-88,587.96

Finding the Fourth Proportional to 145,143.72, 200,320.20 and 88,587.96

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Solution

The fourth proportional to 145,143.72, 200,320.20 and 88,587.96 is: 122,264.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,143.72 : 200,320.20 = 88,587.96 : x
  2. Step 2: Convert to fraction form
    145,143.72/200,320.20 = 88,587.96/x
  3. Step 3: Cross multiply
    145,143.72x = 200,320.20 × 88,587.96
  4. Step 4: Simplify right side
    145,143.72x = 17,745,957,864.79
  5. Step 5: Solve for x
    x = 17,745,957,864.79/145,143.72
  6. Step 6: Final answer
    x = 122,264.73

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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.