Home / 148,854.39-205,420.05-80,871.36

Finding the Fourth Proportional to 148,854.39, 205,420.05 and 80,871.36

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Solution

The fourth proportional to 148,854.39, 205,420.05 and 80,871.36 is: 111,603.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,854.39 : 205,420.05 = 80,871.36 : x
  2. Step 2: Convert to fraction form
    148,854.39/205,420.05 = 80,871.36/x
  3. Step 3: Cross multiply
    148,854.39x = 205,420.05 × 80,871.36
  4. Step 4: Simplify right side
    148,854.39x = 16,612,598,814.77
  5. Step 5: Solve for x
    x = 16,612,598,814.77/148,854.39
  6. Step 6: Final answer
    x = 111,603.02

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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.