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Finding the Fourth Proportional to 149,545, 206,373.92 and 85,888.72

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Solution

The fourth proportional to 149,545, 206,373.92 and 85,888.72 is: 118,527.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,545 : 206,373.92 = 85,888.72 : x
  2. Step 2: Convert to fraction form
    149,545/206,373.92 = 85,888.72/x
  3. Step 3: Cross multiply
    149,545x = 206,373.92 × 85,888.72
  4. Step 4: Simplify right side
    149,545x = 17,725,191,830.18
  5. Step 5: Solve for x
    x = 17,725,191,830.18/149,545
  6. Step 6: Final answer
    x = 118,527.48

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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.