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Finding the Fourth Proportional to 112,292.66, 154,959.81 and 61,990.58

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Solution

The fourth proportional to 112,292.66, 154,959.81 and 61,990.58 is: 85,544.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,292.66 : 154,959.81 = 61,990.58 : x
  2. Step 2: Convert to fraction form
    112,292.66/154,959.81 = 61,990.58/x
  3. Step 3: Cross multiply
    112,292.66x = 154,959.81 × 61,990.58
  4. Step 4: Simplify right side
    112,292.66x = 9,606,048,498.59
  5. Step 5: Solve for x
    x = 9,606,048,498.59/112,292.66
  6. Step 6: Final answer
    x = 85,544.76

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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.