Home / 153,968.60-212,472.56-85,983.68

Finding the Fourth Proportional to 153,968.60, 212,472.56 and 85,983.68

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Solution

The fourth proportional to 153,968.60, 212,472.56 and 85,983.68 is: 118,655.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,968.60 : 212,472.56 = 85,983.68 : x
  2. Step 2: Convert to fraction form
    153,968.60/212,472.56 = 85,983.68/x
  3. Step 3: Cross multiply
    153,968.60x = 212,472.56 × 85,983.68
  4. Step 4: Simplify right side
    153,968.60x = 18,269,172,607.82
  5. Step 5: Solve for x
    x = 18,269,172,607.82/153,968.60
  6. Step 6: Final answer
    x = 118,655.18

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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.