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Finding the Fourth Proportional to 158,251, 218,386.38 and 87,595

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Solution

The fourth proportional to 158,251, 218,386.38 and 87,595 is: 120,881.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,251 : 218,386.38 = 87,595 : x
  2. Step 2: Convert to fraction form
    158,251/218,386.38 = 87,595/x
  3. Step 3: Cross multiply
    158,251x = 218,386.38 × 87,595
  4. Step 4: Simplify right side
    158,251x = 19,129,554,956.10
  5. Step 5: Solve for x
    x = 19,129,554,956.10/158,251
  6. Step 6: Final answer
    x = 120,881.10

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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.