Home / 99,705.65-149,557.86-42,771.15

Finding the Fourth Proportional to 99,705.65, 149,557.86 and 42,771.15

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Solution

The fourth proportional to 99,705.65, 149,557.86 and 42,771.15 is: 64,156.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,705.65 : 149,557.86 = 42,771.15 : x
  2. Step 2: Convert to fraction form
    99,705.65/149,557.86 = 42,771.15/x
  3. Step 3: Cross multiply
    99,705.65x = 149,557.86 × 42,771.15
  4. Step 4: Simplify right side
    99,705.65x = 6,396,761,663.74
  5. Step 5: Solve for x
    x = 6,396,761,663.74/99,705.65
  6. Step 6: Final answer
    x = 64,156.46

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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.