Home / 136,890.40-205,246.80-57,983.20

Finding the Fourth Proportional to 136,890.40, 205,246.80 and 57,983.20

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Solution

The fourth proportional to 136,890.40, 205,246.80 and 57,983.20 is: 86,937.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,890.40 : 205,246.80 = 57,983.20 : x
  2. Step 2: Convert to fraction form
    136,890.40/205,246.80 = 57,983.20/x
  3. Step 3: Cross multiply
    136,890.40x = 205,246.80 × 57,983.20
  4. Step 4: Simplify right side
    136,890.40x = 11,900,866,253.76
  5. Step 5: Solve for x
    x = 11,900,866,253.76/136,890.40
  6. Step 6: Final answer
    x = 86,937.19

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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.