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Finding the Fourth Proportional to 84,745.60, 127,150.80 and 83,417.20

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Solution

The fourth proportional to 84,745.60, 127,150.80 and 83,417.20 is: 125,157.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,745.60 : 127,150.80 = 83,417.20 : x
  2. Step 2: Convert to fraction form
    84,745.60/127,150.80 = 83,417.20/x
  3. Step 3: Cross multiply
    84,745.60x = 127,150.80 × 83,417.20
  4. Step 4: Simplify right side
    84,745.60x = 10,606,563,713.76
  5. Step 5: Solve for x
    x = 10,606,563,713.76/84,745.60
  6. Step 6: Final answer
    x = 125,157.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.