Home / 105,081.17-145,012.49-57,335.52

Finding the Fourth Proportional to 105,081.17, 145,012.49 and 57,335.52

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Solution

The fourth proportional to 105,081.17, 145,012.49 and 57,335.52 is: 79,123.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,081.17 : 145,012.49 = 57,335.52 : x
  2. Step 2: Convert to fraction form
    105,081.17/145,012.49 = 57,335.52/x
  3. Step 3: Cross multiply
    105,081.17x = 145,012.49 × 57,335.52
  4. Step 4: Simplify right side
    105,081.17x = 8,314,366,520.64
  5. Step 5: Solve for x
    x = 8,314,366,520.64/105,081.17
  6. Step 6: Final answer
    x = 79,123.28

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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.