Home / 131,430.79-181,378.23-73,288.87

Finding the Fourth Proportional to 131,430.79, 181,378.23 and 73,288.87

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Solution

The fourth proportional to 131,430.79, 181,378.23 and 73,288.87 is: 101,140.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,430.79 : 181,378.23 = 73,288.87 : x
  2. Step 2: Convert to fraction form
    131,430.79/181,378.23 = 73,288.87/x
  3. Step 3: Cross multiply
    131,430.79x = 181,378.23 × 73,288.87
  4. Step 4: Simplify right side
    131,430.79x = 13,293,005,519.30
  5. Step 5: Solve for x
    x = 13,293,005,519.30/131,430.79
  6. Step 6: Final answer
    x = 101,140.73

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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.