Home / 112,129.48-154,731.90-64,378.36

Finding the Fourth Proportional to 112,129.48, 154,731.90 and 64,378.36

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Solution

The fourth proportional to 112,129.48, 154,731.90 and 64,378.36 is: 88,838.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,129.48 : 154,731.90 = 64,378.36 : x
  2. Step 2: Convert to fraction form
    112,129.48/154,731.90 = 64,378.36/x
  3. Step 3: Cross multiply
    112,129.48x = 154,731.90 × 64,378.36
  4. Step 4: Simplify right side
    112,129.48x = 9,961,385,961.68
  5. Step 5: Solve for x
    x = 9,961,385,961.68/112,129.48
  6. Step 6: Final answer
    x = 88,838.24

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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.