Home / 156,746.48-216,311.73-85,127.90

Finding the Fourth Proportional to 156,746.48, 216,311.73 and 85,127.90

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Solution

The fourth proportional to 156,746.48, 216,311.73 and 85,127.90 is: 117,477.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,746.48 : 216,311.73 = 85,127.90 : x
  2. Step 2: Convert to fraction form
    156,746.48/216,311.73 = 85,127.90/x
  3. Step 3: Cross multiply
    156,746.48x = 216,311.73 × 85,127.90
  4. Step 4: Simplify right side
    156,746.48x = 18,414,163,320.27
  5. Step 5: Solve for x
    x = 18,414,163,320.27/156,746.48
  6. Step 6: Final answer
    x = 117,477.36

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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.