Home / 90,731,272.30-136,096,908.45-81,377,910.70

Finding the Fourth Proportional to 90,731,272.30, 136,096,908.45 and 81,377,910.70

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Solution

The fourth proportional to 90,731,272.30, 136,096,908.45 and 81,377,910.70 is: 122,066,866.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,731,272.30 : 136,096,908.45 = 81,377,910.70 : x
  2. Step 2: Convert to fraction form
    90,731,272.30/136,096,908.45 = 81,377,910.70/x
  3. Step 3: Cross multiply
    90,731,272.30x = 136,096,908.45 × 81,377,910.70
  4. Step 4: Simplify right side
    90,731,272.30x = 11,075,282,062,390,174
  5. Step 5: Solve for x
    x = 11,075,282,062,390,174/90,731,272.30
  6. Step 6: Final answer
    x = 122,066,866.05

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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.