Home / 153,943.64-212,440.14-85,961.78

Finding the Fourth Proportional to 153,943.64, 212,440.14 and 85,961.78

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Solution

The fourth proportional to 153,943.64, 212,440.14 and 85,961.78 is: 118,626.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,943.64 : 212,440.14 = 85,961.78 : x
  2. Step 2: Convert to fraction form
    153,943.64/212,440.14 = 85,961.78/x
  3. Step 3: Cross multiply
    153,943.64x = 212,440.14 × 85,961.78
  4. Step 4: Simplify right side
    153,943.64x = 18,261,732,577.85
  5. Step 5: Solve for x
    x = 18,261,732,577.85/153,943.64
  6. Step 6: Final answer
    x = 118,626.09

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1.5x scale

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.