Home / 119,855.52-165,404.93-66,139.38

Finding the Fourth Proportional to 119,855.52, 165,404.93 and 66,139.38

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Solution

The fourth proportional to 119,855.52, 165,404.93 and 66,139.38 is: 91,274.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,855.52 : 165,404.93 = 66,139.38 : x
  2. Step 2: Convert to fraction form
    119,855.52/165,404.93 = 66,139.38/x
  3. Step 3: Cross multiply
    119,855.52x = 165,404.93 × 66,139.38
  4. Step 4: Simplify right side
    119,855.52x = 10,939,779,188.45
  5. Step 5: Solve for x
    x = 10,939,779,188.45/119,855.52
  6. Step 6: Final answer
    x = 91,274.72

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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.