Home / 106,028,681.10-159,043,021.65-78,818,901.90

Finding the Fourth Proportional to 106,028,681.10, 159,043,021.65 and 78,818,901.90

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Solution

The fourth proportional to 106,028,681.10, 159,043,021.65 and 78,818,901.90 is: 118,228,352.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,028,681.10 : 159,043,021.65 = 78,818,901.90 : x
  2. Step 2: Convert to fraction form
    106,028,681.10/159,043,021.65 = 78,818,901.90/x
  3. Step 3: Cross multiply
    106,028,681.10x = 159,043,021.65 × 78,818,901.90
  4. Step 4: Simplify right side
    106,028,681.10x = 12,535,596,321,310,928
  5. Step 5: Solve for x
    x = 12,535,596,321,310,928/106,028,681.10
  6. Step 6: Final answer
    x = 118,228,352.85

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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.