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Finding the Fourth Proportional to 208,092.10, 312,080.55 and 83,445.70

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Solution

The fourth proportional to 208,092.10, 312,080.55 and 83,445.70 is: 125,145.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,092.10 : 312,080.55 = 83,445.70 : x
  2. Step 2: Convert to fraction form
    208,092.10/312,080.55 = 83,445.70/x
  3. Step 3: Cross multiply
    208,092.10x = 312,080.55 × 83,445.70
  4. Step 4: Simplify right side
    208,092.10x = 26,041,779,951.14
  5. Step 5: Solve for x
    x = 26,041,779,951.14/208,092.10
  6. Step 6: Final answer
    x = 125,145.45

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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.