Home / 90,731,258.80-136,096,888.20-81,377,897.20

Finding the Fourth Proportional to 90,731,258.80, 136,096,888.20 and 81,377,897.20

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Solution

The fourth proportional to 90,731,258.80, 136,096,888.20 and 81,377,897.20 is: 122,066,845.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,731,258.80 : 136,096,888.20 = 81,377,897.20 : x
  2. Step 2: Convert to fraction form
    90,731,258.80/136,096,888.20 = 81,377,897.20/x
  3. Step 3: Cross multiply
    90,731,258.80x = 136,096,888.20 × 81,377,897.20
  4. Step 4: Simplify right side
    90,731,258.80x = 11,075,278,577,179,492
  5. Step 5: Solve for x
    x = 11,075,278,577,179,492/90,731,258.80
  6. Step 6: Final answer
    x = 122,066,845.80

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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.