Home / 208,007.20-312,010.80-83,437.60

Finding the Fourth Proportional to 208,007.20, 312,010.80 and 83,437.60

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Solution

The fourth proportional to 208,007.20, 312,010.80 and 83,437.60 is: 125,156.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,007.20 : 312,010.80 = 83,437.60 : x
  2. Step 2: Convert to fraction form
    208,007.20/312,010.80 = 83,437.60/x
  3. Step 3: Cross multiply
    208,007.20x = 312,010.80 × 83,437.60
  4. Step 4: Simplify right side
    208,007.20x = 26,033,432,326.08
  5. Step 5: Solve for x
    x = 26,033,432,326.08/208,007.20
  6. Step 6: Final answer
    x = 125,156.40

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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.