Home / 136,780.60-205,142.10-57,897.40

Finding the Fourth Proportional to 136,780.60, 205,142.10 and 57,897.40

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Solution

The fourth proportional to 136,780.60, 205,142.10 and 57,897.40 is: 86,833.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,780.60 : 205,142.10 = 57,897.40 : x
  2. Step 2: Convert to fraction form
    136,780.60/205,142.10 = 57,897.40/x
  3. Step 3: Cross multiply
    136,780.60x = 205,142.10 × 57,897.40
  4. Step 4: Simplify right side
    136,780.60x = 11,877,194,220.54
  5. Step 5: Solve for x
    x = 11,877,194,220.54/136,780.60
  6. Step 6: Final answer
    x = 86,833.91

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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.