Home / 102,385.04-141,289.20-57,062.80

Finding the Fourth Proportional to 102,385.04, 141,289.20 and 57,062.80

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Solution

The fourth proportional to 102,385.04, 141,289.20 and 57,062.80 is: 78,745.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,385.04 : 141,289.20 = 57,062.80 : x
  2. Step 2: Convert to fraction form
    102,385.04/141,289.20 = 57,062.80/x
  3. Step 3: Cross multiply
    102,385.04x = 141,289.20 × 57,062.80
  4. Step 4: Simplify right side
    102,385.04x = 8,062,357,361.76
  5. Step 5: Solve for x
    x = 8,062,357,361.76/102,385.04
  6. Step 6: Final answer
    x = 78,745.46

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1.5x scale

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.