Home / 142,729.77-196,967.09-79,071.69

Finding the Fourth Proportional to 142,729.77, 196,967.09 and 79,071.69

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Solution

The fourth proportional to 142,729.77, 196,967.09 and 79,071.69 is: 109,118.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,729.77 : 196,967.09 = 79,071.69 : x
  2. Step 2: Convert to fraction form
    142,729.77/196,967.09 = 79,071.69/x
  3. Step 3: Cross multiply
    142,729.77x = 196,967.09 × 79,071.69
  4. Step 4: Simplify right side
    142,729.77x = 15,574,520,285.32
  5. Step 5: Solve for x
    x = 15,574,520,285.32/142,729.77
  6. Step 6: Final answer
    x = 109,118.93

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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.