Home / 115,259.61-159,058.78-64,272.18

Finding the Fourth Proportional to 115,259.61, 159,058.78 and 64,272.18

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Solution

The fourth proportional to 115,259.61, 159,058.78 and 64,272.18 is: 88,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,259.61 : 159,058.78 = 64,272.18 : x
  2. Step 2: Convert to fraction form
    115,259.61/159,058.78 = 64,272.18/x
  3. Step 3: Cross multiply
    115,259.61x = 159,058.78 × 64,272.18
  4. Step 4: Simplify right side
    115,259.61x = 10,223,054,974.53
  5. Step 5: Solve for x
    x = 10,223,054,974.53/115,259.61
  6. Step 6: Final answer
    x = 88,695.90

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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.