Home / 156,638.09-234,979.01-77,731.13

Finding the Fourth Proportional to 156,638.09, 234,979.01 and 77,731.13

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Solution

The fourth proportional to 156,638.09, 234,979.01 and 77,731.13 is: 116,607.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,638.09 : 234,979.01 = 77,731.13 : x
  2. Step 2: Convert to fraction form
    156,638.09/234,979.01 = 77,731.13/x
  3. Step 3: Cross multiply
    156,638.09x = 234,979.01 × 77,731.13
  4. Step 4: Simplify right side
    156,638.09x = 18,265,182,410.03
  5. Step 5: Solve for x
    x = 18,265,182,410.03/156,638.09
  6. Step 6: Final answer
    x = 116,607.54

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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.