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Finding the Fourth Proportional to 136,671.20, 205,006.80 and 124,205.30

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Solution

The fourth proportional to 136,671.20, 205,006.80 and 124,205.30 is: 186,307.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,671.20 : 205,006.80 = 124,205.30 : x
  2. Step 2: Convert to fraction form
    136,671.20/205,006.80 = 124,205.30/x
  3. Step 3: Cross multiply
    136,671.20x = 205,006.80 × 124,205.30
  4. Step 4: Simplify right side
    136,671.20x = 25,462,931,096.04
  5. Step 5: Solve for x
    x = 25,462,931,096.04/136,671.20
  6. Step 6: Final answer
    x = 186,307.95

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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.