Home / 143,428.72-197,916.48-79,756.24

Finding the Fourth Proportional to 143,428.72, 197,916.48 and 79,756.24

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Solution

The fourth proportional to 143,428.72, 197,916.48 and 79,756.24 is: 110,055.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,428.72 : 197,916.48 = 79,756.24 : x
  2. Step 2: Convert to fraction form
    143,428.72/197,916.48 = 79,756.24/x
  3. Step 3: Cross multiply
    143,428.72x = 197,916.48 × 79,756.24
  4. Step 4: Simplify right side
    143,428.72x = 15,785,074,278.84
  5. Step 5: Solve for x
    x = 15,785,074,278.84/143,428.72
  6. Step 6: Final answer
    x = 110,055.18

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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.