Home / 138,583,889.82-191,243,448.15-76,702,903.58

Finding the Fourth Proportional to 138,583,889.82, 191,243,448.15 and 76,702,903.58

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Solution

The fourth proportional to 138,583,889.82, 191,243,448.15 and 76,702,903.58 is: 105,848,722.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,583,889.82 : 191,243,448.15 = 76,702,903.58 : x
  2. Step 2: Convert to fraction form
    138,583,889.82/191,243,448.15 = 76,702,903.58/x
  3. Step 3: Cross multiply
    138,583,889.82x = 191,243,448.15 × 76,702,903.58
  4. Step 4: Simplify right side
    138,583,889.82x = 14,668,927,763,756,180
  5. Step 5: Solve for x
    x = 14,668,927,763,756,180/138,583,889.82
  6. Step 6: Final answer
    x = 105,848,722.99

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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.