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Finding the Fourth Proportional to 159,598.93, 220,248.06 and 87,981.54

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Solution

The fourth proportional to 159,598.93, 220,248.06 and 87,981.54 is: 121,415.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,598.93 : 220,248.06 = 87,981.54 : x
  2. Step 2: Convert to fraction form
    159,598.93/220,248.06 = 87,981.54/x
  3. Step 3: Cross multiply
    159,598.93x = 220,248.06 × 87,981.54
  4. Step 4: Simplify right side
    159,598.93x = 19,377,763,500.81
  5. Step 5: Solve for x
    x = 19,377,763,500.81/159,598.93
  6. Step 6: Final answer
    x = 121,415.37

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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.