Home / 105,419.10-145,473.75-57,673.38

Finding the Fourth Proportional to 105,419.10, 145,473.75 and 57,673.38

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Solution

The fourth proportional to 105,419.10, 145,473.75 and 57,673.38 is: 79,586.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,419.10 : 145,473.75 = 57,673.38 : x
  2. Step 2: Convert to fraction form
    105,419.10/145,473.75 = 57,673.38/x
  3. Step 3: Cross multiply
    105,419.10x = 145,473.75 × 57,673.38
  4. Step 4: Simplify right side
    105,419.10x = 8,389,962,863.78
  5. Step 5: Solve for x
    x = 8,389,962,863.78/105,419.10
  6. Step 6: Final answer
    x = 79,586.74

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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.