Home / 109,783.95-151,481.91-61,386.75

Finding the Fourth Proportional to 109,783.95, 151,481.91 and 61,386.75

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Solution

The fourth proportional to 109,783.95, 151,481.91 and 61,386.75 is: 84,702.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,783.95 : 151,481.91 = 61,386.75 : x
  2. Step 2: Convert to fraction form
    109,783.95/151,481.91 = 61,386.75/x
  3. Step 3: Cross multiply
    109,783.95x = 151,481.91 × 61,386.75
  4. Step 4: Simplify right side
    109,783.95x = 9,298,982,138.69
  5. Step 5: Solve for x
    x = 9,298,982,138.69/109,783.95
  6. Step 6: Final answer
    x = 84,702.56

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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.