Home / 105,921.78-158,909.40-49,751.52

Finding the Fourth Proportional to 105,921.78, 158,909.40 and 49,751.52

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Solution

The fourth proportional to 105,921.78, 158,909.40 and 49,751.52 is: 74,639.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,921.78 : 158,909.40 = 49,751.52 : x
  2. Step 2: Convert to fraction form
    105,921.78/158,909.40 = 49,751.52/x
  3. Step 3: Cross multiply
    105,921.78x = 158,909.40 × 49,751.52
  4. Step 4: Simplify right side
    105,921.78x = 7,905,984,192.29
  5. Step 5: Solve for x
    x = 7,905,984,192.29/105,921.78
  6. Step 6: Final answer
    x = 74,639.84

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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.