Home / 100,640,012.40-150,960,018.60-90,755,209.80

Finding the Fourth Proportional to 100,640,012.40, 150,960,018.60 and 90,755,209.80

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Solution

The fourth proportional to 100,640,012.40, 150,960,018.60 and 90,755,209.80 is: 136,132,814.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,640,012.40 : 150,960,018.60 = 90,755,209.80 : x
  2. Step 2: Convert to fraction form
    100,640,012.40/150,960,018.60 = 90,755,209.80/x
  3. Step 3: Cross multiply
    100,640,012.40x = 150,960,018.60 × 90,755,209.80
  4. Step 4: Simplify right side
    100,640,012.40x = 13,700,408,159,454,902
  5. Step 5: Solve for x
    x = 13,700,408,159,454,902/100,640,012.40
  6. Step 6: Final answer
    x = 136,132,814.70

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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.