Home / 123,345.81-170,217.23-66,757.19

Finding the Fourth Proportional to 123,345.81, 170,217.23 and 66,757.19

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Solution

The fourth proportional to 123,345.81, 170,217.23 and 66,757.19 is: 92,124.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,345.81 : 170,217.23 = 66,757.19 : x
  2. Step 2: Convert to fraction form
    123,345.81/170,217.23 = 66,757.19/x
  3. Step 3: Cross multiply
    123,345.81x = 170,217.23 × 66,757.19
  4. Step 4: Simplify right side
    123,345.81x = 11,363,222,779.51
  5. Step 5: Solve for x
    x = 11,363,222,779.51/123,345.81
  6. Step 6: Final answer
    x = 92,124.92

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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.