Home / 137,316.80-205,821.60-70,731.20

Finding the Fourth Proportional to 137,316.80, 205,821.60 and 70,731.20

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Solution

The fourth proportional to 137,316.80, 205,821.60 and 70,731.20 is: 106,017.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,316.80 : 205,821.60 = 70,731.20 : x
  2. Step 2: Convert to fraction form
    137,316.80/205,821.60 = 70,731.20/x
  3. Step 3: Cross multiply
    137,316.80x = 205,821.60 × 70,731.20
  4. Step 4: Simplify right side
    137,316.80x = 14,558,008,753.92
  5. Step 5: Solve for x
    x = 14,558,008,753.92/137,316.80
  6. Step 6: Final answer
    x = 106,017.68

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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.