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Finding the Fourth Proportional to 159,168.31, 219,647.95 and 90,270.42

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Solution

The fourth proportional to 159,168.31, 219,647.95 and 90,270.42 is: 124,570.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,168.31 : 219,647.95 = 90,270.42 : x
  2. Step 2: Convert to fraction form
    159,168.31/219,647.95 = 90,270.42/x
  3. Step 3: Cross multiply
    159,168.31x = 219,647.95 × 90,270.42
  4. Step 4: Simplify right side
    159,168.31x = 19,827,712,157.05
  5. Step 5: Solve for x
    x = 19,827,712,157.05/159,168.31
  6. Step 6: Final answer
    x = 124,570.73

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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.