Home / 156,651.34-216,178.98-85,031.32

Finding the Fourth Proportional to 156,651.34, 216,178.98 and 85,031.32

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Solution

The fourth proportional to 156,651.34, 216,178.98 and 85,031.32 is: 117,343.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,651.34 : 216,178.98 = 85,031.32 : x
  2. Step 2: Convert to fraction form
    156,651.34/216,178.98 = 85,031.32/x
  3. Step 3: Cross multiply
    156,651.34x = 216,178.98 × 85,031.32
  4. Step 4: Simplify right side
    156,651.34x = 18,381,984,025.65
  5. Step 5: Solve for x
    x = 18,381,984,025.65/156,651.34
  6. Step 6: Final answer
    x = 117,343.29

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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.