Home / 112,698.72-155,456.64-74,459.52

Finding the Fourth Proportional to 112,698.72, 155,456.64 and 74,459.52

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Solution

The fourth proportional to 112,698.72, 155,456.64 and 74,459.52 is: 102,709.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,698.72 : 155,456.64 = 74,459.52 : x
  2. Step 2: Convert to fraction form
    112,698.72/155,456.64 = 74,459.52/x
  3. Step 3: Cross multiply
    112,698.72x = 155,456.64 × 74,459.52
  4. Step 4: Simplify right side
    112,698.72x = 11,575,226,795.21
  5. Step 5: Solve for x
    x = 11,575,226,795.21/112,698.72
  6. Step 6: Final answer
    x = 102,709.48

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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.