Home / 100,521,143.68-138,725,103.75-75,697,534.57

Finding the Fourth Proportional to 100,521,143.68, 138,725,103.75 and 75,697,534.57

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Solution

The fourth proportional to 100,521,143.68, 138,725,103.75 and 75,697,534.57 is: 104,467,059.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,521,143.68 : 138,725,103.75 = 75,697,534.57 : x
  2. Step 2: Convert to fraction form
    100,521,143.68/138,725,103.75 = 75,697,534.57/x
  3. Step 3: Cross multiply
    100,521,143.68x = 138,725,103.75 × 75,697,534.57
  4. Step 4: Simplify right side
    100,521,143.68x = 10,501,148,336,842,460
  5. Step 5: Solve for x
    x = 10,501,148,336,842,460/100,521,143.68
  6. Step 6: Final answer
    x = 104,467,059.89

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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.