Home / 131,749.72-181,769.18-74,381.88

Finding the Fourth Proportional to 131,749.72, 181,769.18 and 74,381.88

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Solution

The fourth proportional to 131,749.72, 181,769.18 and 74,381.88 is: 102,621.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,749.72 : 181,769.18 = 74,381.88 : x
  2. Step 2: Convert to fraction form
    131,749.72/181,769.18 = 74,381.88/x
  3. Step 3: Cross multiply
    131,749.72x = 181,769.18 × 74,381.88
  4. Step 4: Simplify right side
    131,749.72x = 13,520,333,334.46
  5. Step 5: Solve for x
    x = 13,520,333,334.46/131,749.72
  6. Step 6: Final answer
    x = 102,621.34

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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.