Home / 143,298.90-214,948.35-90,767.70

Finding the Fourth Proportional to 143,298.90, 214,948.35 and 90,767.70

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Solution

The fourth proportional to 143,298.90, 214,948.35 and 90,767.70 is: 136,151.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,298.90 : 214,948.35 = 90,767.70 : x
  2. Step 2: Convert to fraction form
    143,298.90/214,948.35 = 90,767.70/x
  3. Step 3: Cross multiply
    143,298.90x = 214,948.35 × 90,767.70
  4. Step 4: Simplify right side
    143,298.90x = 19,510,367,348.30
  5. Step 5: Solve for x
    x = 19,510,367,348.30/143,298.90
  6. Step 6: Final answer
    x = 136,151.55

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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.