Home / 102,438.23-141,354.41-57,111.95

Finding the Fourth Proportional to 102,438.23, 141,354.41 and 57,111.95

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Solution

The fourth proportional to 102,438.23, 141,354.41 and 57,111.95 is: 78,808.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,438.23 : 141,354.41 = 57,111.95 : x
  2. Step 2: Convert to fraction form
    102,438.23/141,354.41 = 57,111.95/x
  3. Step 3: Cross multiply
    102,438.23x = 141,354.41 × 57,111.95
  4. Step 4: Simplify right side
    102,438.23x = 8,073,026,064.03
  5. Step 5: Solve for x
    x = 8,073,026,064.03/102,438.23
  6. Step 6: Final answer
    x = 78,808.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.