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Finding the Fourth Proportional to 84,182.64, 126,153.64 and 61,820.56

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Solution

The fourth proportional to 84,182.64, 126,153.64 and 61,820.56 is: 92,642.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,182.64 : 126,153.64 = 61,820.56 : x
  2. Step 2: Convert to fraction form
    84,182.64/126,153.64 = 61,820.56/x
  3. Step 3: Cross multiply
    84,182.64x = 126,153.64 × 61,820.56
  4. Step 4: Simplify right side
    84,182.64x = 7,798,888,670.84
  5. Step 5: Solve for x
    x = 7,798,888,670.84/84,182.64
  6. Step 6: Final answer
    x = 92,642.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.