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Finding the Fourth Proportional to 159,545.72, 220,197.41 and 121,242.84

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Solution

The fourth proportional to 159,545.72, 220,197.41 and 121,242.84 is: 167,333.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,545.72 : 220,197.41 = 121,242.84 : x
  2. Step 2: Convert to fraction form
    159,545.72/220,197.41 = 121,242.84/x
  3. Step 3: Cross multiply
    159,545.72x = 220,197.41 × 121,242.84
  4. Step 4: Simplify right side
    159,545.72x = 26,697,358,742.83
  5. Step 5: Solve for x
    x = 26,697,358,742.83/159,545.72
  6. Step 6: Final answer
    x = 167,333.60

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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.