Home / 100,709,364.65-138,970,973.62-56,647,591.34

Finding the Fourth Proportional to 100,709,364.65, 138,970,973.62 and 56,647,591.34

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Solution

The fourth proportional to 100,709,364.65, 138,970,973.62 and 56,647,591.34 is: 78,169,204.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,709,364.65 : 138,970,973.62 = 56,647,591.34 : x
  2. Step 2: Convert to fraction form
    100,709,364.65/138,970,973.62 = 56,647,591.34/x
  3. Step 3: Cross multiply
    100,709,364.65x = 138,970,973.62 × 56,647,591.34
  4. Step 4: Simplify right side
    100,709,364.65x = 7,872,370,921,747,681
  5. Step 5: Solve for x
    x = 7,872,370,921,747,681/100,709,364.65
  6. Step 6: Final answer
    x = 78,169,204.51

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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.