Home / 123,099.50-169,887.03-68,659.40

Finding the Fourth Proportional to 123,099.50, 169,887.03 and 68,659.40

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Solution

The fourth proportional to 123,099.50, 169,887.03 and 68,659.40 is: 94,755.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,099.50 : 169,887.03 = 68,659.40 : x
  2. Step 2: Convert to fraction form
    123,099.50/169,887.03 = 68,659.40/x
  3. Step 3: Cross multiply
    123,099.50x = 169,887.03 × 68,659.40
  4. Step 4: Simplify right side
    123,099.50x = 11,664,341,547.58
  5. Step 5: Solve for x
    x = 11,664,341,547.58/123,099.50
  6. Step 6: Final answer
    x = 94,755.39

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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.