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Finding the Fourth Proportional to 115,103.65, 158,821.98 and 64,115.08

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Solution

The fourth proportional to 115,103.65, 158,821.98 and 64,115.08 is: 88,467.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,103.65 : 158,821.98 = 64,115.08 : x
  2. Step 2: Convert to fraction form
    115,103.65/158,821.98 = 64,115.08/x
  3. Step 3: Cross multiply
    115,103.65x = 158,821.98 × 64,115.08
  4. Step 4: Simplify right side
    115,103.65x = 10,182,883,953.46
  5. Step 5: Solve for x
    x = 10,182,883,953.46/115,103.65
  6. Step 6: Final answer
    x = 88,467.08

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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.