Home / 105,115.60-145,180.20-76,562.47

Finding the Fourth Proportional to 105,115.60, 145,180.20 and 76,562.47

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Solution

The fourth proportional to 105,115.60, 145,180.20 and 76,562.47 is: 105,744.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,115.60 : 145,180.20 = 76,562.47 : x
  2. Step 2: Convert to fraction form
    105,115.60/145,180.20 = 76,562.47/x
  3. Step 3: Cross multiply
    105,115.60x = 145,180.20 × 76,562.47
  4. Step 4: Simplify right side
    105,115.60x = 11,115,354,707.09
  5. Step 5: Solve for x
    x = 11,115,354,707.09/105,115.60
  6. Step 6: Final answer
    x = 105,744.10

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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.