Home / 90,900.04-136,350.05-28,570.54

Finding the Fourth Proportional to 90,900.04, 136,350.05 and 28,570.54

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Solution

The fourth proportional to 90,900.04, 136,350.05 and 28,570.54 is: 42,855.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,900.04 : 136,350.05 = 28,570.54 : x
  2. Step 2: Convert to fraction form
    90,900.04/136,350.05 = 28,570.54/x
  3. Step 3: Cross multiply
    90,900.04x = 136,350.05 × 28,570.54
  4. Step 4: Simplify right side
    90,900.04x = 3,895,593,975.20
  5. Step 5: Solve for x
    x = 3,895,593,975.20/90,900.04
  6. Step 6: Final answer
    x = 42,855.80

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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.