Home / 208,631.60-287,890.44-128,062.52

Finding the Fourth Proportional to 208,631.60, 287,890.44 and 128,062.52

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Solution

The fourth proportional to 208,631.60, 287,890.44 and 128,062.52 is: 176,713.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,631.60 : 287,890.44 = 128,062.52 : x
  2. Step 2: Convert to fraction form
    208,631.60/287,890.44 = 128,062.52/x
  3. Step 3: Cross multiply
    208,631.60x = 287,890.44 × 128,062.52
  4. Step 4: Simplify right side
    208,631.60x = 36,867,975,230.31
  5. Step 5: Solve for x
    x = 36,867,975,230.31/208,631.60
  6. Step 6: Final answer
    x = 176,713.28

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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.