Home / 151,749.18-209,427.75-83,778.30

Finding the Fourth Proportional to 151,749.18, 209,427.75 and 83,778.30

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Solution

The fourth proportional to 151,749.18, 209,427.75 and 83,778.30 is: 115,621.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,749.18 : 209,427.75 = 83,778.30 : x
  2. Step 2: Convert to fraction form
    151,749.18/209,427.75 = 83,778.30/x
  3. Step 3: Cross multiply
    151,749.18x = 209,427.75 × 83,778.30
  4. Step 4: Simplify right side
    151,749.18x = 17,545,500,867.83
  5. Step 5: Solve for x
    x = 17,545,500,867.83/151,749.18
  6. Step 6: Final answer
    x = 115,621.72

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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.