Home / 208,276.08-287,465.76-135,769.56

Finding the Fourth Proportional to 208,276.08, 287,465.76 and 135,769.56

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Solution

The fourth proportional to 208,276.08, 287,465.76 and 135,769.56 is: 187,391.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,276.08 : 287,465.76 = 135,769.56 : x
  2. Step 2: Convert to fraction form
    208,276.08/287,465.76 = 135,769.56/x
  3. Step 3: Cross multiply
    208,276.08x = 287,465.76 × 135,769.56
  4. Step 4: Simplify right side
    208,276.08x = 39,029,099,750.27
  5. Step 5: Solve for x
    x = 39,029,099,750.27/208,276.08
  6. Step 6: Final answer
    x = 187,391.18

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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.