Home / 105,521.92-145,619.82-60,199.78

Finding the Fourth Proportional to 105,521.92, 145,619.82 and 60,199.78

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Solution

The fourth proportional to 105,521.92, 145,619.82 and 60,199.78 is: 83,075.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,521.92 : 145,619.82 = 60,199.78 : x
  2. Step 2: Convert to fraction form
    105,521.92/145,619.82 = 60,199.78/x
  3. Step 3: Cross multiply
    105,521.92x = 145,619.82 × 60,199.78
  4. Step 4: Simplify right side
    105,521.92x = 8,766,281,127.64
  5. Step 5: Solve for x
    x = 8,766,281,127.64/105,521.92
  6. Step 6: Final answer
    x = 83,075.45

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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.