Home / 90,090.90-135,152.82-30,113.70

Finding the Fourth Proportional to 90,090.90, 135,152.82 and 30,113.70

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Solution

The fourth proportional to 90,090.90, 135,152.82 and 30,113.70 is: 45,176.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,090.90 : 135,152.82 = 30,113.70 : x
  2. Step 2: Convert to fraction form
    90,090.90/135,152.82 = 30,113.70/x
  3. Step 3: Cross multiply
    90,090.90x = 135,152.82 × 30,113.70
  4. Step 4: Simplify right side
    90,090.90x = 4,069,951,475.63
  5. Step 5: Solve for x
    x = 4,069,951,475.63/90,090.90
  6. Step 6: Final answer
    x = 45,176.06

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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.