Home / 100,558.10-149,948.90-99,657.38

Finding the Fourth Proportional to 100,558.10, 149,948.90 and 99,657.38

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Solution

The fourth proportional to 100,558.10, 149,948.90 and 99,657.38 is: 148,605.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,558.10 : 149,948.90 = 99,657.38 : x
  2. Step 2: Convert to fraction form
    100,558.10/149,948.90 = 99,657.38/x
  3. Step 3: Cross multiply
    100,558.10x = 149,948.90 × 99,657.38
  4. Step 4: Simplify right side
    100,558.10x = 14,943,514,507.88
  5. Step 5: Solve for x
    x = 14,943,514,507.88/100,558.10
  6. Step 6: Final answer
    x = 148,605.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.