Home / 109,209,905.70-163,814,858.55-91,991,217.30

Finding the Fourth Proportional to 109,209,905.70, 163,814,858.55 and 91,991,217.30

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Solution

The fourth proportional to 109,209,905.70, 163,814,858.55 and 91,991,217.30 is: 137,986,825.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,209,905.70 : 163,814,858.55 = 91,991,217.30 : x
  2. Step 2: Convert to fraction form
    109,209,905.70/163,814,858.55 = 91,991,217.30/x
  3. Step 3: Cross multiply
    109,209,905.70x = 163,814,858.55 × 91,991,217.30
  4. Step 4: Simplify right side
    109,209,905.70x = 15,069,528,249,841,814
  5. Step 5: Solve for x
    x = 15,069,528,249,841,814/109,209,905.70
  6. Step 6: Final answer
    x = 137,986,825.95

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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.