Home / 105,845.74-158,543.70-71,672.28

Finding the Fourth Proportional to 105,845.74, 158,543.70 and 71,672.28

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Solution

The fourth proportional to 105,845.74, 158,543.70 and 71,672.28 is: 107,356.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,845.74 : 158,543.70 = 71,672.28 : x
  2. Step 2: Convert to fraction form
    105,845.74/158,543.70 = 71,672.28/x
  3. Step 3: Cross multiply
    105,845.74x = 158,543.70 × 71,672.28
  4. Step 4: Simplify right side
    105,845.74x = 11,363,188,574.02
  5. Step 5: Solve for x
    x = 11,363,188,574.02/105,845.74
  6. Step 6: Final answer
    x = 107,356.13

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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.