Home / 80,938,901.60-121,408,352.40-66,767,141.60

Finding the Fourth Proportional to 80,938,901.60, 121,408,352.40 and 66,767,141.60

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Solution

The fourth proportional to 80,938,901.60, 121,408,352.40 and 66,767,141.60 is: 100,150,712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,938,901.60 : 121,408,352.40 = 66,767,141.60 : x
  2. Step 2: Convert to fraction form
    80,938,901.60/121,408,352.40 = 66,767,141.60/x
  3. Step 3: Cross multiply
    80,938,901.60x = 121,408,352.40 × 66,767,141.60
  4. Step 4: Simplify right side
    80,938,901.60x = 8,106,088,656,113,500
  5. Step 5: Solve for x
    x = 8,106,088,656,113,500/80,938,901.60
  6. Step 6: Final answer
    x = 100,150,712.40

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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.