Home / 109,512,137.60-164,268,206.40-66,429,987.20

Finding the Fourth Proportional to 109,512,137.60, 164,268,206.40 and 66,429,987.20

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Solution

The fourth proportional to 109,512,137.60, 164,268,206.40 and 66,429,987.20 is: 99,644,980.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,512,137.60 : 164,268,206.40 = 66,429,987.20 : x
  2. Step 2: Convert to fraction form
    109,512,137.60/164,268,206.40 = 66,429,987.20/x
  3. Step 3: Cross multiply
    109,512,137.60x = 164,268,206.40 × 66,429,987.20
  4. Step 4: Simplify right side
    109,512,137.60x = 10,912,334,848,518,958
  5. Step 5: Solve for x
    x = 10,912,334,848,518,958/109,512,137.60
  6. Step 6: Final answer
    x = 99,644,980.80

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1.5x scale

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.