Home / 143,558.78-215,321.70-38,385.95

Finding the Fourth Proportional to 143,558.78, 215,321.70 and 38,385.95

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Solution

The fourth proportional to 143,558.78, 215,321.70 and 38,385.95 is: 57,574.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,558.78 : 215,321.70 = 38,385.95 : x
  2. Step 2: Convert to fraction form
    143,558.78/215,321.70 = 38,385.95/x
  3. Step 3: Cross multiply
    143,558.78x = 215,321.70 × 38,385.95
  4. Step 4: Simplify right side
    143,558.78x = 8,265,326,933.51
  5. Step 5: Solve for x
    x = 8,265,326,933.51/143,558.78
  6. Step 6: Final answer
    x = 57,574.52

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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.