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Finding the Fourth Proportional to 161,966.30, 243,058.80 and 90,888.80

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Solution

The fourth proportional to 161,966.30, 243,058.80 and 90,888.80 is: 136,394.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,966.30 : 243,058.80 = 90,888.80 : x
  2. Step 2: Convert to fraction form
    161,966.30/243,058.80 = 90,888.80/x
  3. Step 3: Cross multiply
    161,966.30x = 243,058.80 × 90,888.80
  4. Step 4: Simplify right side
    161,966.30x = 22,091,322,661.44
  5. Step 5: Solve for x
    x = 22,091,322,661.44/161,966.30
  6. Step 6: Final answer
    x = 136,394.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.