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Finding the Fourth Proportional to 92,900.35, 128,166.43 and 65,716.40

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Solution

The fourth proportional to 92,900.35, 128,166.43 and 65,716.40 is: 90,663.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,900.35 : 128,166.43 = 65,716.40 : x
  2. Step 2: Convert to fraction form
    92,900.35/128,166.43 = 65,716.40/x
  3. Step 3: Cross multiply
    92,900.35x = 128,166.43 × 65,716.40
  4. Step 4: Simplify right side
    92,900.35x = 8,422,635,754.03
  5. Step 5: Solve for x
    x = 8,422,635,754.03/92,900.35
  6. Step 6: Final answer
    x = 90,663.12

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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.