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Finding the Fourth Proportional to 125,018.16, 187,605 and 91,224.96

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Solution

The fourth proportional to 125,018.16, 187,605 and 91,224.96 is: 136,894.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,018.16 : 187,605 = 91,224.96 : x
  2. Step 2: Convert to fraction form
    125,018.16/187,605 = 91,224.96/x
  3. Step 3: Cross multiply
    125,018.16x = 187,605 × 91,224.96
  4. Step 4: Simplify right side
    125,018.16x = 17,114,258,620.80
  5. Step 5: Solve for x
    x = 17,114,258,620.80/125,018.16
  6. Step 6: Final answer
    x = 136,894.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.