Home / 100,640,015.40-150,960,023.10-90,755,212.80

Finding the Fourth Proportional to 100,640,015.40, 150,960,023.10 and 90,755,212.80

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Solution

The fourth proportional to 100,640,015.40, 150,960,023.10 and 90,755,212.80 is: 136,132,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,640,015.40 : 150,960,023.10 = 90,755,212.80 : x
  2. Step 2: Convert to fraction form
    100,640,015.40/150,960,023.10 = 90,755,212.80/x
  3. Step 3: Cross multiply
    100,640,015.40x = 150,960,023.10 × 90,755,212.80
  4. Step 4: Simplify right side
    100,640,015.40x = 13,700,409,020,733,414
  5. Step 5: Solve for x
    x = 13,700,409,020,733,414/100,640,015.40
  6. Step 6: Final answer
    x = 136,132,819.20

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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.