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Finding the Fourth Proportional to 101,300.60, 139,803.70 and 67,248.92

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Solution

The fourth proportional to 101,300.60, 139,803.70 and 67,248.92 is: 92,809.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,300.60 : 139,803.70 = 67,248.92 : x
  2. Step 2: Convert to fraction form
    101,300.60/139,803.70 = 67,248.92/x
  3. Step 3: Cross multiply
    101,300.60x = 139,803.70 × 67,248.92
  4. Step 4: Simplify right side
    101,300.60x = 9,401,647,837.00
  5. Step 5: Solve for x
    x = 9,401,647,837.00/101,300.60
  6. Step 6: Final answer
    x = 92,809.40

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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.