Home / 100,521,137.69-138,725,095.46-75,697,528.58

Finding the Fourth Proportional to 100,521,137.69, 138,725,095.46 and 75,697,528.58

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Solution

The fourth proportional to 100,521,137.69, 138,725,095.46 and 75,697,528.58 is: 104,467,051.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,521,137.69 : 138,725,095.46 = 75,697,528.58 : x
  2. Step 2: Convert to fraction form
    100,521,137.69/138,725,095.46 = 75,697,528.58/x
  3. Step 3: Cross multiply
    100,521,137.69x = 138,725,095.46 × 75,697,528.58
  4. Step 4: Simplify right side
    100,521,137.69x = 10,501,146,878,346,578
  5. Step 5: Solve for x
    x = 10,501,146,878,346,578/100,521,137.69
  6. Step 6: Final answer
    x = 104,467,051.60

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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.