Home / 143,128.04-197,502.26-79,458.92

Finding the Fourth Proportional to 143,128.04, 197,502.26 and 79,458.92

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Solution

The fourth proportional to 143,128.04, 197,502.26 and 79,458.92 is: 109,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,128.04 : 197,502.26 = 79,458.92 : x
  2. Step 2: Convert to fraction form
    143,128.04/197,502.26 = 79,458.92/x
  3. Step 3: Cross multiply
    143,128.04x = 197,502.26 × 79,458.92
  4. Step 4: Simplify right side
    143,128.04x = 15,693,316,277.16
  5. Step 5: Solve for x
    x = 15,693,316,277.16/143,128.04
  6. Step 6: Final answer
    x = 109,645.30

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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.