Home / 128,006,972.02-176,650,086.72-69,269,631.04

Finding the Fourth Proportional to 128,006,972.02, 176,650,086.72 and 69,269,631.04

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Solution

The fourth proportional to 128,006,972.02, 176,650,086.72 and 69,269,631.04 is: 95,592,342.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,006,972.02 : 176,650,086.72 = 69,269,631.04 : x
  2. Step 2: Convert to fraction form
    128,006,972.02/176,650,086.72 = 69,269,631.04/x
  3. Step 3: Cross multiply
    128,006,972.02x = 176,650,086.72 × 69,269,631.04
  4. Step 4: Simplify right side
    128,006,972.02x = 12,236,486,330,278,404
  5. Step 5: Solve for x
    x = 12,236,486,330,278,404/128,006,972.02
  6. Step 6: Final answer
    x = 95,592,342.64

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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.