Home / 99,148.74-136,878.60-76,437.96

Finding the Fourth Proportional to 99,148.74, 136,878.60 and 76,437.96

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Solution

The fourth proportional to 99,148.74, 136,878.60 and 76,437.96 is: 105,525.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,148.74 : 136,878.60 = 76,437.96 : x
  2. Step 2: Convert to fraction form
    99,148.74/136,878.60 = 76,437.96/x
  3. Step 3: Cross multiply
    99,148.74x = 136,878.60 × 76,437.96
  4. Step 4: Simplify right side
    99,148.74x = 10,462,720,951.66
  5. Step 5: Solve for x
    x = 10,462,720,951.66/99,148.74
  6. Step 6: Final answer
    x = 105,525.51

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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.