Home / 107,108.52-147,775.98-61,780.43

Finding the Fourth Proportional to 107,108.52, 147,775.98 and 61,780.43

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Solution

The fourth proportional to 107,108.52, 147,775.98 and 61,780.43 is: 85,237.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,108.52 : 147,775.98 = 61,780.43 : x
  2. Step 2: Convert to fraction form
    107,108.52/147,775.98 = 61,780.43/x
  3. Step 3: Cross multiply
    107,108.52x = 147,775.98 × 61,780.43
  4. Step 4: Simplify right side
    107,108.52x = 9,129,662,849.19
  5. Step 5: Solve for x
    x = 9,129,662,849.19/107,108.52
  6. Step 6: Final answer
    x = 85,237.50

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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.