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Finding the Fourth Proportional to 158,525.63, 218,768.19 and 85,930.90

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Solution

The fourth proportional to 158,525.63, 218,768.19 and 85,930.90 is: 118,586.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,525.63 : 218,768.19 = 85,930.90 : x
  2. Step 2: Convert to fraction form
    158,525.63/218,768.19 = 85,930.90/x
  3. Step 3: Cross multiply
    158,525.63x = 218,768.19 × 85,930.90
  4. Step 4: Simplify right side
    158,525.63x = 18,798,947,731.53
  5. Step 5: Solve for x
    x = 18,798,947,731.53/158,525.63
  6. Step 6: Final answer
    x = 118,586.17

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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.