Home / 118,681,719.30-178,022,578.95-72,765,216.90

Finding the Fourth Proportional to 118,681,719.30, 178,022,578.95 and 72,765,216.90

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Solution

The fourth proportional to 118,681,719.30, 178,022,578.95 and 72,765,216.90 is: 109,147,825.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,681,719.30 : 178,022,578.95 = 72,765,216.90 : x
  2. Step 2: Convert to fraction form
    118,681,719.30/178,022,578.95 = 72,765,216.90/x
  3. Step 3: Cross multiply
    118,681,719.30x = 178,022,578.95 × 72,765,216.90
  4. Step 4: Simplify right side
    118,681,719.30x = 12,953,851,570,394,124
  5. Step 5: Solve for x
    x = 12,953,851,570,394,124/118,681,719.30
  6. Step 6: Final answer
    x = 109,147,825.35

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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.