Home / 109,037.20-163,555.80-90,010.30

Finding the Fourth Proportional to 109,037.20, 163,555.80 and 90,010.30

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Solution

The fourth proportional to 109,037.20, 163,555.80 and 90,010.30 is: 135,015.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,037.20 : 163,555.80 = 90,010.30 : x
  2. Step 2: Convert to fraction form
    109,037.20/163,555.80 = 90,010.30/x
  3. Step 3: Cross multiply
    109,037.20x = 163,555.80 × 90,010.30
  4. Step 4: Simplify right side
    109,037.20x = 14,721,706,624.74
  5. Step 5: Solve for x
    x = 14,721,706,624.74/109,037.20
  6. Step 6: Final answer
    x = 135,015.45

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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.