Home / 112,086.16-154,678.76-61,786

Finding the Fourth Proportional to 112,086.16, 154,678.76 and 61,786

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Solution

The fourth proportional to 112,086.16, 154,678.76 and 61,786 is: 85,264.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,086.16 : 154,678.76 = 61,786 : x
  2. Step 2: Convert to fraction form
    112,086.16/154,678.76 = 61,786/x
  3. Step 3: Cross multiply
    112,086.16x = 154,678.76 × 61,786
  4. Step 4: Simplify right side
    112,086.16x = 9,556,981,865.36
  5. Step 5: Solve for x
    x = 9,556,981,865.36/112,086.16
  6. Step 6: Final answer
    x = 85,264.60

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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.