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Finding the Fourth Proportional to 154,532.79, 213,230.88 and 90,012.63

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Solution

The fourth proportional to 154,532.79, 213,230.88 and 90,012.63 is: 124,203.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,532.79 : 213,230.88 = 90,012.63 : x
  2. Step 2: Convert to fraction form
    154,532.79/213,230.88 = 90,012.63/x
  3. Step 3: Cross multiply
    154,532.79x = 213,230.88 × 90,012.63
  4. Step 4: Simplify right side
    154,532.79x = 19,193,472,306.01
  5. Step 5: Solve for x
    x = 19,193,472,306.01/154,532.79
  6. Step 6: Final answer
    x = 124,203.23

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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.