Home / 99,820.70-149,731.05-92,603.60

Finding the Fourth Proportional to 99,820.70, 149,731.05 and 92,603.60

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Solution

The fourth proportional to 99,820.70, 149,731.05 and 92,603.60 is: 138,905.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,820.70 : 149,731.05 = 92,603.60 : x
  2. Step 2: Convert to fraction form
    99,820.70/149,731.05 = 92,603.60/x
  3. Step 3: Cross multiply
    99,820.70x = 149,731.05 × 92,603.60
  4. Step 4: Simplify right side
    99,820.70x = 13,865,634,261.78
  5. Step 5: Solve for x
    x = 13,865,634,261.78/99,820.70
  6. Step 6: Final answer
    x = 138,905.40

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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.