Home / 109,209,920.70-163,814,881.05-91,991,232.30

Finding the Fourth Proportional to 109,209,920.70, 163,814,881.05 and 91,991,232.30

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Solution

The fourth proportional to 109,209,920.70, 163,814,881.05 and 91,991,232.30 is: 137,986,848.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,209,920.70 : 163,814,881.05 = 91,991,232.30 : x
  2. Step 2: Convert to fraction form
    109,209,920.70/163,814,881.05 = 91,991,232.30/x
  3. Step 3: Cross multiply
    109,209,920.70x = 163,814,881.05 × 91,991,232.30
  4. Step 4: Simplify right side
    109,209,920.70x = 15,069,532,776,867,418
  5. Step 5: Solve for x
    x = 15,069,532,776,867,418/109,209,920.70
  6. Step 6: Final answer
    x = 137,986,848.45

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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.