Home / 105,310.24-157,829.28-78,807.04

Finding the Fourth Proportional to 105,310.24, 157,829.28 and 78,807.04

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Solution

The fourth proportional to 105,310.24, 157,829.28 and 78,807.04 is: 118,108.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,310.24 : 157,829.28 = 78,807.04 : x
  2. Step 2: Convert to fraction form
    105,310.24/157,829.28 = 78,807.04/x
  3. Step 3: Cross multiply
    105,310.24x = 157,829.28 × 78,807.04
  4. Step 4: Simplify right side
    105,310.24x = 12,438,058,382.13
  5. Step 5: Solve for x
    x = 12,438,058,382.13/105,310.24
  6. Step 6: Final answer
    x = 118,108.73

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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.