Home / 120,185,982.56-180,278,693.49-78,947,167.76

Finding the Fourth Proportional to 120,185,982.56, 180,278,693.49 and 78,947,167.76

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Solution

The fourth proportional to 120,185,982.56, 180,278,693.49 and 78,947,167.76 is: 118,420,567.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,185,982.56 : 180,278,693.49 = 78,947,167.76 : x
  2. Step 2: Convert to fraction form
    120,185,982.56/180,278,693.49 = 78,947,167.76/x
  3. Step 3: Cross multiply
    120,185,982.56x = 180,278,693.49 × 78,947,167.76
  4. Step 4: Simplify right side
    120,185,982.56x = 14,232,492,258,508,652
  5. Step 5: Solve for x
    x = 14,232,492,258,508,652/120,185,982.56
  6. Step 6: Final answer
    x = 118,420,567.49

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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.