Home / 145,156,878.40-217,436,719.20-73,393,729.60

Finding the Fourth Proportional to 145,156,878.40, 217,436,719.20 and 73,393,729.60

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Solution

The fourth proportional to 145,156,878.40, 217,436,719.20 and 73,393,729.60 is: 109,939,618.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,156,878.40 : 217,436,719.20 = 73,393,729.60 : x
  2. Step 2: Convert to fraction form
    145,156,878.40/217,436,719.20 = 73,393,729.60/x
  3. Step 3: Cross multiply
    145,156,878.40x = 217,436,719.20 × 73,393,729.60
  4. Step 4: Simplify right side
    145,156,878.40x = 15,958,491,774,075,926
  5. Step 5: Solve for x
    x = 15,958,491,774,075,926/145,156,878.40
  6. Step 6: Final answer
    x = 109,939,618.09

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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.