Home / 136,869.90-205,458.45-105,842.70

Finding the Fourth Proportional to 136,869.90, 205,458.45 and 105,842.70

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Solution

The fourth proportional to 136,869.90, 205,458.45 and 105,842.70 is: 158,882.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,869.90 : 205,458.45 = 105,842.70 : x
  2. Step 2: Convert to fraction form
    136,869.90/205,458.45 = 105,842.70/x
  3. Step 3: Cross multiply
    136,869.90x = 205,458.45 × 105,842.70
  4. Step 4: Simplify right side
    136,869.90x = 21,746,277,085.82
  5. Step 5: Solve for x
    x = 21,746,277,085.82/136,869.90
  6. Step 6: Final answer
    x = 158,882.83

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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.