Home / 149,379.99-206,141.71-81,397.55

Finding the Fourth Proportional to 149,379.99, 206,141.71 and 81,397.55

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Solution

The fourth proportional to 149,379.99, 206,141.71 and 81,397.55 is: 112,327.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,379.99 : 206,141.71 = 81,397.55 : x
  2. Step 2: Convert to fraction form
    149,379.99/206,141.71 = 81,397.55/x
  3. Step 3: Cross multiply
    149,379.99x = 206,141.71 × 81,397.55
  4. Step 4: Simplify right side
    149,379.99x = 16,779,430,374.91
  5. Step 5: Solve for x
    x = 16,779,430,374.91/149,379.99
  6. Step 6: Final answer
    x = 112,327.16

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1.5x scale

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.