Home / 149,834.96-206,763.10-81,838.16

Finding the Fourth Proportional to 149,834.96, 206,763.10 and 81,838.16

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Solution

The fourth proportional to 149,834.96, 206,763.10 and 81,838.16 is: 112,931.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,834.96 : 206,763.10 = 81,838.16 : x
  2. Step 2: Convert to fraction form
    149,834.96/206,763.10 = 81,838.16/x
  3. Step 3: Cross multiply
    149,834.96x = 206,763.10 × 81,838.16
  4. Step 4: Simplify right side
    149,834.96x = 16,921,110,421.49
  5. Step 5: Solve for x
    x = 16,921,110,421.49/149,834.96
  6. Step 6: Final answer
    x = 112,931.66

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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.