Home / 109,047.30-163,592.55-91,637.70

Finding the Fourth Proportional to 109,047.30, 163,592.55 and 91,637.70

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Solution

The fourth proportional to 109,047.30, 163,592.55 and 91,637.70 is: 137,474.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,047.30 : 163,592.55 = 91,637.70 : x
  2. Step 2: Convert to fraction form
    109,047.30/163,592.55 = 91,637.70/x
  3. Step 3: Cross multiply
    109,047.30x = 163,592.55 × 91,637.70
  4. Step 4: Simplify right side
    109,047.30x = 14,991,245,019.14
  5. Step 5: Solve for x
    x = 14,991,245,019.14/109,047.30
  6. Step 6: Final answer
    x = 137,474.70

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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.