Home / 156,621.89-216,138.11-88,637.63

Finding the Fourth Proportional to 156,621.89, 216,138.11 and 88,637.63

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Solution

The fourth proportional to 156,621.89, 216,138.11 and 88,637.63 is: 122,319.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,621.89 : 216,138.11 = 88,637.63 : x
  2. Step 2: Convert to fraction form
    156,621.89/216,138.11 = 88,637.63/x
  3. Step 3: Cross multiply
    156,621.89x = 216,138.11 × 88,637.63
  4. Step 4: Simplify right side
    156,621.89x = 19,157,968,963.98
  5. Step 5: Solve for x
    x = 19,157,968,963.98/156,621.89
  6. Step 6: Final answer
    x = 122,319.87

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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.