Home / 145,939.19-218,908.78-112,707.72

Finding the Fourth Proportional to 145,939.19, 218,908.78 and 112,707.72

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Solution

The fourth proportional to 145,939.19, 218,908.78 and 112,707.72 is: 169,061.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,939.19 : 218,908.78 = 112,707.72 : x
  2. Step 2: Convert to fraction form
    145,939.19/218,908.78 = 112,707.72/x
  3. Step 3: Cross multiply
    145,939.19x = 218,908.78 × 112,707.72
  4. Step 4: Simplify right side
    145,939.19x = 24,672,709,200.01
  5. Step 5: Solve for x
    x = 24,672,709,200.01/145,939.19
  6. Step 6: Final answer
    x = 169,061.58

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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.