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Finding the Fourth Proportional to 153,989.82, 212,499.96 and 96,660.06

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Solution

The fourth proportional to 153,989.82, 212,499.96 and 96,660.06 is: 133,387.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,989.82 : 212,499.96 = 96,660.06 : x
  2. Step 2: Convert to fraction form
    153,989.82/212,499.96 = 96,660.06/x
  3. Step 3: Cross multiply
    153,989.82x = 212,499.96 × 96,660.06
  4. Step 4: Simplify right side
    153,989.82x = 20,540,258,883.60
  5. Step 5: Solve for x
    x = 20,540,258,883.60/153,989.82
  6. Step 6: Final answer
    x = 133,387.12

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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.