Home / 113,435.20-170,152.80-78,005.80

Finding the Fourth Proportional to 113,435.20, 170,152.80 and 78,005.80

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Solution

The fourth proportional to 113,435.20, 170,152.80 and 78,005.80 is: 117,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,435.20 : 170,152.80 = 78,005.80 : x
  2. Step 2: Convert to fraction form
    113,435.20/170,152.80 = 78,005.80/x
  3. Step 3: Cross multiply
    113,435.20x = 170,152.80 × 78,005.80
  4. Step 4: Simplify right side
    113,435.20x = 13,272,905,286.24
  5. Step 5: Solve for x
    x = 13,272,905,286.24/113,435.20
  6. Step 6: Final answer
    x = 117,008.70

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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.