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Finding the Fourth Proportional to 124,215.08, 171,617.22 and 86,657

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Solution

The fourth proportional to 124,215.08, 171,617.22 and 86,657 is: 119,726.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,215.08 : 171,617.22 = 86,657 : x
  2. Step 2: Convert to fraction form
    124,215.08/171,617.22 = 86,657/x
  3. Step 3: Cross multiply
    124,215.08x = 171,617.22 × 86,657
  4. Step 4: Simplify right side
    124,215.08x = 14,871,833,433.54
  5. Step 5: Solve for x
    x = 14,871,833,433.54/124,215.08
  6. Step 6: Final answer
    x = 119,726.47

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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.