Home / 90,816.80-136,225.20-38,208.80

Finding the Fourth Proportional to 90,816.80, 136,225.20 and 38,208.80

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Solution

The fourth proportional to 90,816.80, 136,225.20 and 38,208.80 is: 57,313.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,816.80 : 136,225.20 = 38,208.80 : x
  2. Step 2: Convert to fraction form
    90,816.80/136,225.20 = 38,208.80/x
  3. Step 3: Cross multiply
    90,816.80x = 136,225.20 × 38,208.80
  4. Step 4: Simplify right side
    90,816.80x = 5,205,001,421.76
  5. Step 5: Solve for x
    x = 5,205,001,421.76/90,816.80
  6. Step 6: Final answer
    x = 57,313.20

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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.