Home / 156,746.64-235,131.24-77,781.36

Finding the Fourth Proportional to 156,746.64, 235,131.24 and 77,781.36

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Solution

The fourth proportional to 156,746.64, 235,131.24 and 77,781.36 is: 116,677.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,746.64 : 235,131.24 = 77,781.36 : x
  2. Step 2: Convert to fraction form
    156,746.64/235,131.24 = 77,781.36/x
  3. Step 3: Cross multiply
    156,746.64x = 235,131.24 × 77,781.36
  4. Step 4: Simplify right side
    156,746.64x = 18,288,827,625.69
  5. Step 5: Solve for x
    x = 18,288,827,625.69/156,746.64
  6. Step 6: Final answer
    x = 116,677.64

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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.