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Finding the Fourth Proportional to 108,857.91, 150,213.65 and 61,101.93

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Solution

The fourth proportional to 108,857.91, 150,213.65 and 61,101.93 is: 84,314.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,857.91 : 150,213.65 = 61,101.93 : x
  2. Step 2: Convert to fraction form
    108,857.91/150,213.65 = 61,101.93/x
  3. Step 3: Cross multiply
    108,857.91x = 150,213.65 × 61,101.93
  4. Step 4: Simplify right side
    108,857.91x = 9,178,343,621.83
  5. Step 5: Solve for x
    x = 9,178,343,621.83/108,857.91
  6. Step 6: Final answer
    x = 84,314.90

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1.5x scale

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.