Home / 102,739.52-141,780.12-57,417.48

Finding the Fourth Proportional to 102,739.52, 141,780.12 and 57,417.48

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Solution

The fourth proportional to 102,739.52, 141,780.12 and 57,417.48 is: 79,235.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,739.52 : 141,780.12 = 57,417.48 : x
  2. Step 2: Convert to fraction form
    102,739.52/141,780.12 = 57,417.48/x
  3. Step 3: Cross multiply
    102,739.52x = 141,780.12 × 57,417.48
  4. Step 4: Simplify right side
    102,739.52x = 8,140,657,204.50
  5. Step 5: Solve for x
    x = 8,140,657,204.50/102,739.52
  6. Step 6: Final answer
    x = 79,235.89

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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.