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Finding the Fourth Proportional to 109,457.45, 151,051.46 and 61,710.67

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Solution

The fourth proportional to 109,457.45, 151,051.46 and 61,710.67 is: 85,160.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,457.45 : 151,051.46 = 61,710.67 : x
  2. Step 2: Convert to fraction form
    109,457.45/151,051.46 = 61,710.67/x
  3. Step 3: Cross multiply
    109,457.45x = 151,051.46 × 61,710.67
  4. Step 4: Simplify right side
    109,457.45x = 9,321,486,801.08
  5. Step 5: Solve for x
    x = 9,321,486,801.08/109,457.45
  6. Step 6: Final answer
    x = 85,160.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.