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Finding the Fourth Proportional to 117,574.90, 162,251.90 and 66,586.20

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Solution

The fourth proportional to 117,574.90, 162,251.90 and 66,586.20 is: 91,888.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,574.90 : 162,251.90 = 66,586.20 : x
  2. Step 2: Convert to fraction form
    117,574.90/162,251.90 = 66,586.20/x
  3. Step 3: Cross multiply
    117,574.90x = 162,251.90 × 66,586.20
  4. Step 4: Simplify right side
    117,574.90x = 10,803,737,463.78
  5. Step 5: Solve for x
    x = 10,803,737,463.78/117,574.90
  6. Step 6: Final answer
    x = 91,888.13

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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.