Home / 131,857.04-181,958.96-77,408.35

Finding the Fourth Proportional to 131,857.04, 181,958.96 and 77,408.35

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Solution

The fourth proportional to 131,857.04, 181,958.96 and 77,408.35 is: 106,821.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,857.04 : 181,958.96 = 77,408.35 : x
  2. Step 2: Convert to fraction form
    131,857.04/181,958.96 = 77,408.35/x
  3. Step 3: Cross multiply
    131,857.04x = 181,958.96 × 77,408.35
  4. Step 4: Simplify right side
    131,857.04x = 14,085,142,599.94
  5. Step 5: Solve for x
    x = 14,085,142,599.94/131,857.04
  6. Step 6: Final answer
    x = 106,821.31

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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.