Home / 131,769.96-181,768.77-78,002.58

Finding the Fourth Proportional to 131,769.96, 181,768.77 and 78,002.58

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Solution

The fourth proportional to 131,769.96, 181,768.77 and 78,002.58 is: 107,599.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,769.96 : 181,768.77 = 78,002.58 : x
  2. Step 2: Convert to fraction form
    131,769.96/181,768.77 = 78,002.58/x
  3. Step 3: Cross multiply
    131,769.96x = 181,768.77 × 78,002.58
  4. Step 4: Simplify right side
    131,769.96x = 14,178,433,023.43
  5. Step 5: Solve for x
    x = 14,178,433,023.43/131,769.96
  6. Step 6: Final answer
    x = 107,599.89

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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.