Home / 119,678.08-165,126.72-71,968

Finding the Fourth Proportional to 119,678.08, 165,126.72 and 71,968

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Solution

The fourth proportional to 119,678.08, 165,126.72 and 71,968 is: 99,298.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,678.08 : 165,126.72 = 71,968 : x
  2. Step 2: Convert to fraction form
    119,678.08/165,126.72 = 71,968/x
  3. Step 3: Cross multiply
    119,678.08x = 165,126.72 × 71,968
  4. Step 4: Simplify right side
    119,678.08x = 11,883,839,784.96
  5. Step 5: Solve for x
    x = 11,883,839,784.96/119,678.08
  6. Step 6: Final answer
    x = 99,298.38

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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.