Home / 208,100.20-287,177.70-112,608.52

Finding the Fourth Proportional to 208,100.20, 287,177.70 and 112,608.52

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Solution

The fourth proportional to 208,100.20, 287,177.70 and 112,608.52 is: 155,399.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,100.20 : 287,177.70 = 112,608.52 : x
  2. Step 2: Convert to fraction form
    208,100.20/287,177.70 = 112,608.52/x
  3. Step 3: Cross multiply
    208,100.20x = 287,177.70 × 112,608.52
  4. Step 4: Simplify right side
    208,100.20x = 32,338,655,774.00
  5. Step 5: Solve for x
    x = 32,338,655,774.00/208,100.20
  6. Step 6: Final answer
    x = 155,399.45

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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.