Home / 109,099.20-163,648.80-90,667.20

Finding the Fourth Proportional to 109,099.20, 163,648.80 and 90,667.20

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Solution

The fourth proportional to 109,099.20, 163,648.80 and 90,667.20 is: 136,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,099.20 : 163,648.80 = 90,667.20 : x
  2. Step 2: Convert to fraction form
    109,099.20/163,648.80 = 90,667.20/x
  3. Step 3: Cross multiply
    109,099.20x = 163,648.80 × 90,667.20
  4. Step 4: Simplify right side
    109,099.20x = 14,837,578,479.36
  5. Step 5: Solve for x
    x = 14,837,578,479.36/109,099.20
  6. Step 6: Final answer
    x = 136,000.80

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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.