Home / 156,781.29-216,362.21-85,165.41

Finding the Fourth Proportional to 156,781.29, 216,362.21 and 85,165.41

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Solution

The fourth proportional to 156,781.29, 216,362.21 and 85,165.41 is: 117,530.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,781.29 : 216,362.21 = 85,165.41 : x
  2. Step 2: Convert to fraction form
    156,781.29/216,362.21 = 85,165.41/x
  3. Step 3: Cross multiply
    156,781.29x = 216,362.21 × 85,165.41
  4. Step 4: Simplify right side
    156,781.29x = 18,426,576,323.16
  5. Step 5: Solve for x
    x = 18,426,576,323.16/156,781.29
  6. Step 6: Final answer
    x = 117,530.45

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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.