Home / 105,555.72-145,667.13-57,158.19

Finding the Fourth Proportional to 105,555.72, 145,667.13 and 57,158.19

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Solution

The fourth proportional to 105,555.72, 145,667.13 and 57,158.19 is: 78,878.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,555.72 : 145,667.13 = 57,158.19 : x
  2. Step 2: Convert to fraction form
    105,555.72/145,667.13 = 57,158.19/x
  3. Step 3: Cross multiply
    105,555.72x = 145,667.13 × 57,158.19
  4. Step 4: Simplify right side
    105,555.72x = 8,326,069,493.29
  5. Step 5: Solve for x
    x = 8,326,069,493.29/105,555.72
  6. Step 6: Final answer
    x = 78,878.43

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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.