Home / 139,968,187.95-209,952,282.20-85,548,629.55

Finding the Fourth Proportional to 139,968,187.95, 209,952,282.20 and 85,548,629.55

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Solution

The fourth proportional to 139,968,187.95, 209,952,282.20 and 85,548,629.55 is: 128,322,944.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,187.95 : 209,952,282.20 = 85,548,629.55 : x
  2. Step 2: Convert to fraction form
    139,968,187.95/209,952,282.20 = 85,548,629.55/x
  3. Step 3: Cross multiply
    139,968,187.95x = 209,952,282.20 × 85,548,629.55
  4. Step 4: Simplify right side
    139,968,187.95x = 17,961,130,012,677,114
  5. Step 5: Solve for x
    x = 17,961,130,012,677,114/139,968,187.95
  6. Step 6: Final answer
    x = 128,322,944.49

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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.