Home / 90,239.04-135,269.32-42,770.80

Finding the Fourth Proportional to 90,239.04, 135,269.32 and 42,770.80

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Solution

The fourth proportional to 90,239.04, 135,269.32 and 42,770.80 is: 64,113.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,239.04 : 135,269.32 = 42,770.80 : x
  2. Step 2: Convert to fraction form
    90,239.04/135,269.32 = 42,770.80/x
  3. Step 3: Cross multiply
    90,239.04x = 135,269.32 × 42,770.80
  4. Step 4: Simplify right side
    90,239.04x = 5,785,577,031.86
  5. Step 5: Solve for x
    x = 5,785,577,031.86/90,239.04
  6. Step 6: Final answer
    x = 64,113.90

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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.