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Finding the Fourth Proportional to 109,203.96, 150,699.70 and 61,457.28

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Solution

The fourth proportional to 109,203.96, 150,699.70 and 61,457.28 is: 84,810.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,203.96 : 150,699.70 = 61,457.28 : x
  2. Step 2: Convert to fraction form
    109,203.96/150,699.70 = 61,457.28/x
  3. Step 3: Cross multiply
    109,203.96x = 150,699.70 × 61,457.28
  4. Step 4: Simplify right side
    109,203.96x = 9,261,593,658.82
  5. Step 5: Solve for x
    x = 9,261,593,658.82/109,203.96
  6. Step 6: Final answer
    x = 84,810.05

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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.