Home / 85,845.92-118,206.80-76,146.40

Finding the Fourth Proportional to 85,845.92, 118,206.80 and 76,146.40

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Solution

The fourth proportional to 85,845.92, 118,206.80 and 76,146.40 is: 104,850.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,845.92 : 118,206.80 = 76,146.40 : x
  2. Step 2: Convert to fraction form
    85,845.92/118,206.80 = 76,146.40/x
  3. Step 3: Cross multiply
    85,845.92x = 118,206.80 × 76,146.40
  4. Step 4: Simplify right side
    85,845.92x = 9,001,022,275.52
  5. Step 5: Solve for x
    x = 9,001,022,275.52/85,845.92
  6. Step 6: Final answer
    x = 104,850.90

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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.