Home / 208,144.60-312,341.47-89,815.96

Finding the Fourth Proportional to 208,144.60, 312,341.47 and 89,815.96

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Solution

The fourth proportional to 208,144.60, 312,341.47 and 89,815.96 is: 134,777.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,144.60 : 312,341.47 = 89,815.96 : x
  2. Step 2: Convert to fraction form
    208,144.60/312,341.47 = 89,815.96/x
  3. Step 3: Cross multiply
    208,144.60x = 312,341.47 × 89,815.96
  4. Step 4: Simplify right side
    208,144.60x = 28,053,248,975.86
  5. Step 5: Solve for x
    x = 28,053,248,975.86/208,144.60
  6. Step 6: Final answer
    x = 134,777.69

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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.