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Finding the Fourth Proportional to 163,161.88, 225,166.86 and 91,547.08

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Solution

The fourth proportional to 163,161.88, 225,166.86 and 91,547.08 is: 126,336.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,161.88 : 225,166.86 = 91,547.08 : x
  2. Step 2: Convert to fraction form
    163,161.88/225,166.86 = 91,547.08/x
  3. Step 3: Cross multiply
    163,161.88x = 225,166.86 × 91,547.08
  4. Step 4: Simplify right side
    163,161.88x = 20,613,368,545.77
  5. Step 5: Solve for x
    x = 20,613,368,545.77/163,161.88
  6. Step 6: Final answer
    x = 126,336.91

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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.