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Finding the Fourth Proportional to 140,042.81, 209,927.52 and 55,777.70

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Solution

The fourth proportional to 140,042.81, 209,927.52 and 55,777.70 is: 83,612.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,042.81 : 209,927.52 = 55,777.70 : x
  2. Step 2: Convert to fraction form
    140,042.81/209,927.52 = 55,777.70/x
  3. Step 3: Cross multiply
    140,042.81x = 209,927.52 × 55,777.70
  4. Step 4: Simplify right side
    140,042.81x = 11,709,273,182.67
  5. Step 5: Solve for x
    x = 11,709,273,182.67/140,042.81
  6. Step 6: Final answer
    x = 83,612.10

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1.5x scale

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.