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Finding the Fourth Proportional to 100,335.70, 138,443.74 and 59,492.26

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Solution

The fourth proportional to 100,335.70, 138,443.74 and 59,492.26 is: 82,087.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,335.70 : 138,443.74 = 59,492.26 : x
  2. Step 2: Convert to fraction form
    100,335.70/138,443.74 = 59,492.26/x
  3. Step 3: Cross multiply
    100,335.70x = 138,443.74 × 59,492.26
  4. Step 4: Simplify right side
    100,335.70x = 8,236,330,975.45
  5. Step 5: Solve for x
    x = 8,236,330,975.45/100,335.70
  6. Step 6: Final answer
    x = 82,087.74

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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.