Home / 112,021.29-154,530.18-66,666.96

Finding the Fourth Proportional to 112,021.29, 154,530.18 and 66,666.96

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Solution

The fourth proportional to 112,021.29, 154,530.18 and 66,666.96 is: 91,965.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,021.29 : 154,530.18 = 66,666.96 : x
  2. Step 2: Convert to fraction form
    112,021.29/154,530.18 = 66,666.96/x
  3. Step 3: Cross multiply
    112,021.29x = 154,530.18 × 66,666.96
  4. Step 4: Simplify right side
    112,021.29x = 10,302,057,328.85
  5. Step 5: Solve for x
    x = 10,302,057,328.85/112,021.29
  6. Step 6: Final answer
    x = 91,965.17

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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.