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Finding the Fourth Proportional to 112,997.75, 155,878.03 and 67,030.66

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Solution

The fourth proportional to 112,997.75, 155,878.03 and 67,030.66 is: 92,467.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,997.75 : 155,878.03 = 67,030.66 : x
  2. Step 2: Convert to fraction form
    112,997.75/155,878.03 = 67,030.66/x
  3. Step 3: Cross multiply
    112,997.75x = 155,878.03 × 67,030.66
  4. Step 4: Simplify right side
    112,997.75x = 10,448,606,547.45
  5. Step 5: Solve for x
    x = 10,448,606,547.45/112,997.75
  6. Step 6: Final answer
    x = 92,467.38

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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.