Home / 119,621.61-165,077.01-65,905.38

Finding the Fourth Proportional to 119,621.61, 165,077.01 and 65,905.38

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Solution

The fourth proportional to 119,621.61, 165,077.01 and 65,905.38 is: 90,948.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,621.61 : 165,077.01 = 65,905.38 : x
  2. Step 2: Convert to fraction form
    119,621.61/165,077.01 = 65,905.38/x
  3. Step 3: Cross multiply
    119,621.61x = 165,077.01 × 65,905.38
  4. Step 4: Simplify right side
    119,621.61x = 10,879,463,073.31
  5. Step 5: Solve for x
    x = 10,879,463,073.31/119,621.61
  6. Step 6: Final answer
    x = 90,948.98

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1.5x scale

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.