Home / 104,725.04-144,521.16-56,978.72

Finding the Fourth Proportional to 104,725.04, 144,521.16 and 56,978.72

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Solution

The fourth proportional to 104,725.04, 144,521.16 and 56,978.72 is: 78,630.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,725.04 : 144,521.16 = 56,978.72 : x
  2. Step 2: Convert to fraction form
    104,725.04/144,521.16 = 56,978.72/x
  3. Step 3: Cross multiply
    104,725.04x = 144,521.16 × 56,978.72
  4. Step 4: Simplify right side
    104,725.04x = 8,234,629,987.11
  5. Step 5: Solve for x
    x = 8,234,629,987.11/104,725.04
  6. Step 6: Final answer
    x = 78,630.96

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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.