Home / 109,015.80-163,545.30-91,606.20

Finding the Fourth Proportional to 109,015.80, 163,545.30 and 91,606.20

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Solution

The fourth proportional to 109,015.80, 163,545.30 and 91,606.20 is: 137,427.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,015.80 : 163,545.30 = 91,606.20 : x
  2. Step 2: Convert to fraction form
    109,015.80/163,545.30 = 91,606.20/x
  3. Step 3: Cross multiply
    109,015.80x = 163,545.30 × 91,606.20
  4. Step 4: Simplify right side
    109,015.80x = 14,981,763,460.86
  5. Step 5: Solve for x
    x = 14,981,763,460.86/109,015.80
  6. Step 6: Final answer
    x = 137,427.45

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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.