Home / 156,935.36-216,575.04-85,320.30

Finding the Fourth Proportional to 156,935.36, 216,575.04 and 85,320.30

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Solution

The fourth proportional to 156,935.36, 216,575.04 and 85,320.30 is: 117,744.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,935.36 : 216,575.04 = 85,320.30 : x
  2. Step 2: Convert to fraction form
    156,935.36/216,575.04 = 85,320.30/x
  3. Step 3: Cross multiply
    156,935.36x = 216,575.04 × 85,320.30
  4. Step 4: Simplify right side
    156,935.36x = 18,478,247,385.31
  5. Step 5: Solve for x
    x = 18,478,247,385.31/156,935.36
  6. Step 6: Final answer
    x = 117,744.32

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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.