Home / 115,680.38-159,637.80-64,692.53

Finding the Fourth Proportional to 115,680.38, 159,637.80 and 64,692.53

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Solution

The fourth proportional to 115,680.38, 159,637.80 and 64,692.53 is: 89,275.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,680.38 : 159,637.80 = 64,692.53 : x
  2. Step 2: Convert to fraction form
    115,680.38/159,637.80 = 64,692.53/x
  3. Step 3: Cross multiply
    115,680.38x = 159,637.80 × 64,692.53
  4. Step 4: Simplify right side
    115,680.38x = 10,327,373,165.63
  5. Step 5: Solve for x
    x = 10,327,373,165.63/115,680.38
  6. Step 6: Final answer
    x = 89,275.06

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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.