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Finding the Fourth Proportional to 100,836.67, 139,214.51 and 89,626.63

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Solution

The fourth proportional to 100,836.67, 139,214.51 and 89,626.63 is: 123,738.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,836.67 : 139,214.51 = 89,626.63 : x
  2. Step 2: Convert to fraction form
    100,836.67/139,214.51 = 89,626.63/x
  3. Step 3: Cross multiply
    100,836.67x = 139,214.51 × 89,626.63
  4. Step 4: Simplify right side
    100,836.67x = 12,477,327,378.40
  5. Step 5: Solve for x
    x = 12,477,327,378.40/100,836.67
  6. Step 6: Final answer
    x = 123,738.00

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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.