Home / 156,809,895.82-216,424,742.21-90,766,808.30

Finding the Fourth Proportional to 156,809,895.82, 216,424,742.21 and 90,766,808.30

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Solution

The fourth proportional to 156,809,895.82, 216,424,742.21 and 90,766,808.30 is: 125,273,873.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,809,895.82 : 216,424,742.21 = 90,766,808.30 : x
  2. Step 2: Convert to fraction form
    156,809,895.82/216,424,742.21 = 90,766,808.30/x
  3. Step 3: Cross multiply
    156,809,895.82x = 216,424,742.21 × 90,766,808.30
  4. Step 4: Simplify right side
    156,809,895.82x = 19,644,183,087,551,988
  5. Step 5: Solve for x
    x = 19,644,183,087,551,988/156,809,895.82
  6. Step 6: Final answer
    x = 125,273,873.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.