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Finding the Fourth Proportional to 99,051.90, 148,905.90 and 84,617.70

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Solution

The fourth proportional to 99,051.90, 148,905.90 and 84,617.70 is: 127,206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,051.90 : 148,905.90 = 84,617.70 : x
  2. Step 2: Convert to fraction form
    99,051.90/148,905.90 = 84,617.70/x
  3. Step 3: Cross multiply
    99,051.90x = 148,905.90 × 84,617.70
  4. Step 4: Simplify right side
    99,051.90x = 12,600,074,774.43
  5. Step 5: Solve for x
    x = 12,600,074,774.43/99,051.90
  6. Step 6: Final answer
    x = 127,206.80

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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.