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Finding the Fourth Proportional to 115,058.80, 158,780.82 and 64,757.80

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Solution

The fourth proportional to 115,058.80, 158,780.82 and 64,757.80 is: 89,365.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,058.80 : 158,780.82 = 64,757.80 : x
  2. Step 2: Convert to fraction form
    115,058.80/158,780.82 = 64,757.80/x
  3. Step 3: Cross multiply
    115,058.80x = 158,780.82 × 64,757.80
  4. Step 4: Simplify right side
    115,058.80x = 10,282,296,585.40
  5. Step 5: Solve for x
    x = 10,282,296,585.40/115,058.80
  6. Step 6: Final answer
    x = 89,365.58

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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.