Home / 101,861.15-152,846.40-42,702.80

Finding the Fourth Proportional to 101,861.15, 152,846.40 and 42,702.80

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Solution

The fourth proportional to 101,861.15, 152,846.40 and 42,702.80 is: 64,077.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,861.15 : 152,846.40 = 42,702.80 : x
  2. Step 2: Convert to fraction form
    101,861.15/152,846.40 = 42,702.80/x
  3. Step 3: Cross multiply
    101,861.15x = 152,846.40 × 42,702.80
  4. Step 4: Simplify right side
    101,861.15x = 6,526,969,249.92
  5. Step 5: Solve for x
    x = 6,526,969,249.92/101,861.15
  6. Step 6: Final answer
    x = 64,077.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.