Home / 106,538,605.40-159,807,908.10-72,101,228.60

Finding the Fourth Proportional to 106,538,605.40, 159,807,908.10 and 72,101,228.60

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Solution

The fourth proportional to 106,538,605.40, 159,807,908.10 and 72,101,228.60 is: 108,151,842.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,538,605.40 : 159,807,908.10 = 72,101,228.60 : x
  2. Step 2: Convert to fraction form
    106,538,605.40/159,807,908.10 = 72,101,228.60/x
  3. Step 3: Cross multiply
    106,538,605.40x = 159,807,908.10 × 72,101,228.60
  4. Step 4: Simplify right side
    106,538,605.40x = 11,522,346,514,005,890
  5. Step 5: Solve for x
    x = 11,522,346,514,005,890/106,538,605.40
  6. Step 6: Final answer
    x = 108,151,842.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.