Home / 142,855.72-197,127.58-79,188.08

Finding the Fourth Proportional to 142,855.72, 197,127.58 and 79,188.08

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Solution

The fourth proportional to 142,855.72, 197,127.58 and 79,188.08 is: 109,272.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,855.72 : 197,127.58 = 79,188.08 : x
  2. Step 2: Convert to fraction form
    142,855.72/197,127.58 = 79,188.08/x
  3. Step 3: Cross multiply
    142,855.72x = 197,127.58 × 79,188.08
  4. Step 4: Simplify right side
    142,855.72x = 15,610,154,575.25
  5. Step 5: Solve for x
    x = 15,610,154,575.25/142,855.72
  6. Step 6: Final answer
    x = 109,272.17

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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.