Home / 105,155.68-145,115.33-57,410.12

Finding the Fourth Proportional to 105,155.68, 145,115.33 and 57,410.12

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Solution

The fourth proportional to 105,155.68, 145,115.33 and 57,410.12 is: 79,226.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,155.68 : 145,115.33 = 57,410.12 : x
  2. Step 2: Convert to fraction form
    105,155.68/145,115.33 = 57,410.12/x
  3. Step 3: Cross multiply
    105,155.68x = 145,115.33 × 57,410.12
  4. Step 4: Simplify right side
    105,155.68x = 8,331,088,222.09
  5. Step 5: Solve for x
    x = 8,331,088,222.09/105,155.68
  6. Step 6: Final answer
    x = 79,226.24

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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.