Home / 158,637.17-218,930.43-90,664.20

Finding the Fourth Proportional to 158,637.17, 218,930.43 and 90,664.20

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Solution

The fourth proportional to 158,637.17, 218,930.43 and 90,664.20 is: 125,122.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,637.17 : 218,930.43 = 90,664.20 : x
  2. Step 2: Convert to fraction form
    158,637.17/218,930.43 = 90,664.20/x
  3. Step 3: Cross multiply
    158,637.17x = 218,930.43 × 90,664.20
  4. Step 4: Simplify right side
    158,637.17x = 19,849,152,291.61
  5. Step 5: Solve for x
    x = 19,849,152,291.61/158,637.17
  6. Step 6: Final answer
    x = 125,122.96

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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.