Home / 112,011.78-154,566-66,700.80

Finding the Fourth Proportional to 112,011.78, 154,566 and 66,700.80

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Solution

The fourth proportional to 112,011.78, 154,566 and 66,700.80 is: 92,041.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,011.78 : 154,566 = 66,700.80 : x
  2. Step 2: Convert to fraction form
    112,011.78/154,566 = 66,700.80/x
  3. Step 3: Cross multiply
    112,011.78x = 154,566 × 66,700.80
  4. Step 4: Simplify right side
    112,011.78x = 10,309,675,852.80
  5. Step 5: Solve for x
    x = 10,309,675,852.80/112,011.78
  6. Step 6: Final answer
    x = 92,041.00

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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.