Home / 151,721,987.20-209,377,002.09-82,107,374.24

Finding the Fourth Proportional to 151,721,987.20, 209,377,002.09 and 82,107,374.24

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Solution

The fourth proportional to 151,721,987.20, 209,377,002.09 and 82,107,374.24 is: 113,308,533.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,721,987.20 : 209,377,002.09 = 82,107,374.24 : x
  2. Step 2: Convert to fraction form
    151,721,987.20/209,377,002.09 = 82,107,374.24/x
  3. Step 3: Cross multiply
    151,721,987.20x = 209,377,002.09 × 82,107,374.24
  4. Step 4: Simplify right side
    151,721,987.20x = 17,191,395,866,813,506
  5. Step 5: Solve for x
    x = 17,191,395,866,813,506/151,721,987.20
  6. Step 6: Final answer
    x = 113,308,533.48

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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.