Home / 153,936.05-212,429.70-85,954.16

Finding the Fourth Proportional to 153,936.05, 212,429.70 and 85,954.16

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Solution

The fourth proportional to 153,936.05, 212,429.70 and 85,954.16 is: 118,615.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,936.05 : 212,429.70 = 85,954.16 : x
  2. Step 2: Convert to fraction form
    153,936.05/212,429.70 = 85,954.16/x
  3. Step 3: Cross multiply
    153,936.05x = 212,429.70 × 85,954.16
  4. Step 4: Simplify right side
    153,936.05x = 18,259,216,422.55
  5. Step 5: Solve for x
    x = 18,259,216,422.55/153,936.05
  6. Step 6: Final answer
    x = 118,615.60

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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.