Home / 90,348,001.40-135,522,002.10-76,743,111.80

Finding the Fourth Proportional to 90,348,001.40, 135,522,002.10 and 76,743,111.80

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Solution

The fourth proportional to 90,348,001.40, 135,522,002.10 and 76,743,111.80 is: 115,114,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,348,001.40 : 135,522,002.10 = 76,743,111.80 : x
  2. Step 2: Convert to fraction form
    90,348,001.40/135,522,002.10 = 76,743,111.80/x
  3. Step 3: Cross multiply
    90,348,001.40x = 135,522,002.10 × 76,743,111.80
  4. Step 4: Simplify right side
    90,348,001.40x = 10,400,380,158,520,134
  5. Step 5: Solve for x
    x = 10,400,380,158,520,134/90,348,001.40
  6. Step 6: Final answer
    x = 115,114,667.70

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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.