Home / 144,777.28-217,029.76-78,117.52

Finding the Fourth Proportional to 144,777.28, 217,029.76 and 78,117.52

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Solution

The fourth proportional to 144,777.28, 217,029.76 and 78,117.52 is: 117,102.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,777.28 : 217,029.76 = 78,117.52 : x
  2. Step 2: Convert to fraction form
    144,777.28/217,029.76 = 78,117.52/x
  3. Step 3: Cross multiply
    144,777.28x = 217,029.76 × 78,117.52
  4. Step 4: Simplify right side
    144,777.28x = 16,953,826,617.40
  5. Step 5: Solve for x
    x = 16,953,826,617.40/144,777.28
  6. Step 6: Final answer
    x = 117,102.81

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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.