Home / 119,788.40-165,294.86-66,070

Finding the Fourth Proportional to 119,788.40, 165,294.86 and 66,070

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Solution

The fourth proportional to 119,788.40, 165,294.86 and 66,070 is: 91,169.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,788.40 : 165,294.86 = 66,070 : x
  2. Step 2: Convert to fraction form
    119,788.40/165,294.86 = 66,070/x
  3. Step 3: Cross multiply
    119,788.40x = 165,294.86 × 66,070
  4. Step 4: Simplify right side
    119,788.40x = 10,921,031,400.20
  5. Step 5: Solve for x
    x = 10,921,031,400.20/119,788.40
  6. Step 6: Final answer
    x = 91,169.36

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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.