Home / 161,728.90-242,593.35-90,870.10

Finding the Fourth Proportional to 161,728.90, 242,593.35 and 90,870.10

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Solution

The fourth proportional to 161,728.90, 242,593.35 and 90,870.10 is: 136,305.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,728.90 : 242,593.35 = 90,870.10 : x
  2. Step 2: Convert to fraction form
    161,728.90/242,593.35 = 90,870.10/x
  3. Step 3: Cross multiply
    161,728.90x = 242,593.35 × 90,870.10
  4. Step 4: Simplify right side
    161,728.90x = 22,044,481,973.84
  5. Step 5: Solve for x
    x = 22,044,481,973.84/161,728.90
  6. Step 6: Final answer
    x = 136,305.15

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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.