Home / 143,587.36-198,157.08-79,929.19

Finding the Fourth Proportional to 143,587.36, 198,157.08 and 79,929.19

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Solution

The fourth proportional to 143,587.36, 198,157.08 and 79,929.19 is: 110,305.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,587.36 : 198,157.08 = 79,929.19 : x
  2. Step 2: Convert to fraction form
    143,587.36/198,157.08 = 79,929.19/x
  3. Step 3: Cross multiply
    143,587.36x = 198,157.08 × 79,929.19
  4. Step 4: Simplify right side
    143,587.36x = 15,838,534,897.17
  5. Step 5: Solve for x
    x = 15,838,534,897.17/143,587.36
  6. Step 6: Final answer
    x = 110,305.91

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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.