Home / 153,857.32-212,333.80-85,887.56

Finding the Fourth Proportional to 153,857.32, 212,333.80 and 85,887.56

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Solution

The fourth proportional to 153,857.32, 212,333.80 and 85,887.56 is: 118,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,857.32 : 212,333.80 = 85,887.56 : x
  2. Step 2: Convert to fraction form
    153,857.32/212,333.80 = 85,887.56/x
  3. Step 3: Cross multiply
    153,857.32x = 212,333.80 × 85,887.56
  4. Step 4: Simplify right side
    153,857.32x = 18,236,831,027.26
  5. Step 5: Solve for x
    x = 18,236,831,027.26/153,857.32
  6. Step 6: Final answer
    x = 118,530.80

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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.