Home / 105,155.22-144,860.22-89,999.40

Finding the Fourth Proportional to 105,155.22, 144,860.22 and 89,999.40

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Solution

The fourth proportional to 105,155.22, 144,860.22 and 89,999.40 is: 123,981.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,155.22 : 144,860.22 = 89,999.40 : x
  2. Step 2: Convert to fraction form
    105,155.22/144,860.22 = 89,999.40/x
  3. Step 3: Cross multiply
    105,155.22x = 144,860.22 × 89,999.40
  4. Step 4: Simplify right side
    105,155.22x = 13,037,332,883.87
  5. Step 5: Solve for x
    x = 13,037,332,883.87/105,155.22
  6. Step 6: Final answer
    x = 123,981.79

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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.