Home / 90,731,274.30-136,096,911.45-81,377,912.70

Finding the Fourth Proportional to 90,731,274.30, 136,096,911.45 and 81,377,912.70

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Solution

The fourth proportional to 90,731,274.30, 136,096,911.45 and 81,377,912.70 is: 122,066,869.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,731,274.30 : 136,096,911.45 = 81,377,912.70 : x
  2. Step 2: Convert to fraction form
    90,731,274.30/136,096,911.45 = 81,377,912.70/x
  3. Step 3: Cross multiply
    90,731,274.30x = 136,096,911.45 × 81,377,912.70
  4. Step 4: Simplify right side
    90,731,274.30x = 11,075,282,578,717,730
  5. Step 5: Solve for x
    x = 11,075,282,578,717,730/90,731,274.30
  6. Step 6: Final answer
    x = 122,066,869.05

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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.