Home / 80,938,908.60-121,408,362.90-66,767,148.60

Finding the Fourth Proportional to 80,938,908.60, 121,408,362.90 and 66,767,148.60

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Solution

The fourth proportional to 80,938,908.60, 121,408,362.90 and 66,767,148.60 is: 100,150,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,938,908.60 : 121,408,362.90 = 66,767,148.60 : x
  2. Step 2: Convert to fraction form
    80,938,908.60/121,408,362.90 = 66,767,148.60/x
  3. Step 3: Cross multiply
    80,938,908.60x = 121,408,362.90 × 66,767,148.60
  4. Step 4: Simplify right side
    80,938,908.60x = 8,106,090,207,027,028
  5. Step 5: Solve for x
    x = 8,106,090,207,027,028/80,938,908.60
  6. Step 6: Final answer
    x = 100,150,722.90

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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.