Home / 109,512,135.60-164,268,203.40-66,429,985.20

Finding the Fourth Proportional to 109,512,135.60, 164,268,203.40 and 66,429,985.20

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Solution

The fourth proportional to 109,512,135.60, 164,268,203.40 and 66,429,985.20 is: 99,644,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,512,135.60 : 164,268,203.40 = 66,429,985.20 : x
  2. Step 2: Convert to fraction form
    109,512,135.60/164,268,203.40 = 66,429,985.20/x
  3. Step 3: Cross multiply
    109,512,135.60x = 164,268,203.40 × 66,429,985.20
  4. Step 4: Simplify right side
    109,512,135.60x = 10,912,334,320,692,590
  5. Step 5: Solve for x
    x = 10,912,334,320,692,590/109,512,135.60
  6. Step 6: Final answer
    x = 99,644,977.80

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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.