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Finding the Fourth Proportional to 124,378.72, 171,642.64 and 67,790.08

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Solution

The fourth proportional to 124,378.72, 171,642.64 and 67,790.08 is: 93,550.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,378.72 : 171,642.64 = 67,790.08 : x
  2. Step 2: Convert to fraction form
    124,378.72/171,642.64 = 67,790.08/x
  3. Step 3: Cross multiply
    124,378.72x = 171,642.64 × 67,790.08
  4. Step 4: Simplify right side
    124,378.72x = 11,635,668,297.01
  5. Step 5: Solve for x
    x = 11,635,668,297.01/124,378.72
  6. Step 6: Final answer
    x = 93,550.31

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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.