Home / 142,648.14-196,860.57-78,985.89

Finding the Fourth Proportional to 142,648.14, 196,860.57 and 78,985.89

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Solution

The fourth proportional to 142,648.14, 196,860.57 and 78,985.89 is: 109,003.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,648.14 : 196,860.57 = 78,985.89 : x
  2. Step 2: Convert to fraction form
    142,648.14/196,860.57 = 78,985.89/x
  3. Step 3: Cross multiply
    142,648.14x = 196,860.57 × 78,985.89
  4. Step 4: Simplify right side
    142,648.14x = 15,549,207,327.36
  5. Step 5: Solve for x
    x = 15,549,207,327.36/142,648.14
  6. Step 6: Final answer
    x = 109,003.93

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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.