Home / 158,366.16-218,548.82-90,381.78

Finding the Fourth Proportional to 158,366.16, 218,548.82 and 90,381.78

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Solution

The fourth proportional to 158,366.16, 218,548.82 and 90,381.78 is: 124,728.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,366.16 : 218,548.82 = 90,381.78 : x
  2. Step 2: Convert to fraction form
    158,366.16/218,548.82 = 90,381.78/x
  3. Step 3: Cross multiply
    158,366.16x = 218,548.82 × 90,381.78
  4. Step 4: Simplify right side
    158,366.16x = 19,752,830,916.59
  5. Step 5: Solve for x
    x = 19,752,830,916.59/158,366.16
  6. Step 6: Final answer
    x = 124,728.86

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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.