Home / 112,139.16-168,018.32-67,672.47

Finding the Fourth Proportional to 112,139.16, 168,018.32 and 67,672.47

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Solution

The fourth proportional to 112,139.16, 168,018.32 and 67,672.47 is: 101,393.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,139.16 : 168,018.32 = 67,672.47 : x
  2. Step 2: Convert to fraction form
    112,139.16/168,018.32 = 67,672.47/x
  3. Step 3: Cross multiply
    112,139.16x = 168,018.32 × 67,672.47
  4. Step 4: Simplify right side
    112,139.16x = 11,370,214,381.29
  5. Step 5: Solve for x
    x = 11,370,214,381.29/112,139.16
  6. Step 6: Final answer
    x = 101,393.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.