Home / 142,868.09-197,160.09-78,343.22

Finding the Fourth Proportional to 142,868.09, 197,160.09 and 78,343.22

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Solution

The fourth proportional to 142,868.09, 197,160.09 and 78,343.22 is: 108,114.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,868.09 : 197,160.09 = 78,343.22 : x
  2. Step 2: Convert to fraction form
    142,868.09/197,160.09 = 78,343.22/x
  3. Step 3: Cross multiply
    142,868.09x = 197,160.09 × 78,343.22
  4. Step 4: Simplify right side
    142,868.09x = 15,446,155,320.29
  5. Step 5: Solve for x
    x = 15,446,155,320.29/142,868.09
  6. Step 6: Final answer
    x = 108,114.81

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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.