Home / 109,778.18-151,501.48-66,774.48

Finding the Fourth Proportional to 109,778.18, 151,501.48 and 66,774.48

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Solution

The fourth proportional to 109,778.18, 151,501.48 and 66,774.48 is: 92,153.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,778.18 : 151,501.48 = 66,774.48 : x
  2. Step 2: Convert to fraction form
    109,778.18/151,501.48 = 66,774.48/x
  3. Step 3: Cross multiply
    109,778.18x = 151,501.48 × 66,774.48
  4. Step 4: Simplify right side
    109,778.18x = 10,116,432,546.23
  5. Step 5: Solve for x
    x = 10,116,432,546.23/109,778.18
  6. Step 6: Final answer
    x = 92,153.40

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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.