Home / 85,023.60-127,535.40-71,901.60

Finding the Fourth Proportional to 85,023.60, 127,535.40 and 71,901.60

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Solution

The fourth proportional to 85,023.60, 127,535.40 and 71,901.60 is: 107,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,023.60 : 127,535.40 = 71,901.60 : x
  2. Step 2: Convert to fraction form
    85,023.60/127,535.40 = 71,901.60/x
  3. Step 3: Cross multiply
    85,023.60x = 127,535.40 × 71,901.60
  4. Step 4: Simplify right side
    85,023.60x = 9,169,999,316.64
  5. Step 5: Solve for x
    x = 9,169,999,316.64/85,023.60
  6. Step 6: Final answer
    x = 107,852.40

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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.