Home / 112,116.75-154,722.33-61,129.07

Finding the Fourth Proportional to 112,116.75, 154,722.33 and 61,129.07

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Solution

The fourth proportional to 112,116.75, 154,722.33 and 61,129.07 is: 84,358.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,116.75 : 154,722.33 = 61,129.07 : x
  2. Step 2: Convert to fraction form
    112,116.75/154,722.33 = 61,129.07/x
  3. Step 3: Cross multiply
    112,116.75x = 154,722.33 × 61,129.07
  4. Step 4: Simplify right side
    112,116.75x = 9,458,031,061.88
  5. Step 5: Solve for x
    x = 9,458,031,061.88/112,116.75
  6. Step 6: Final answer
    x = 84,358.77

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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.