Home / 109,220,915.40-163,831,373.10-99,867,553.80

Finding the Fourth Proportional to 109,220,915.40, 163,831,373.10 and 99,867,553.80

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Solution

The fourth proportional to 109,220,915.40, 163,831,373.10 and 99,867,553.80 is: 149,801,330.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,220,915.40 : 163,831,373.10 = 99,867,553.80 : x
  2. Step 2: Convert to fraction form
    109,220,915.40/163,831,373.10 = 99,867,553.80/x
  3. Step 3: Cross multiply
    109,220,915.40x = 163,831,373.10 × 99,867,553.80
  4. Step 4: Simplify right side
    109,220,915.40x = 16,361,438,467,192,122
  5. Step 5: Solve for x
    x = 16,361,438,467,192,122/109,220,915.40
  6. Step 6: Final answer
    x = 149,801,330.70

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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.