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Finding the Fourth Proportional to 156,980.62, 235,479.09 and 51,807.79

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Solution

The fourth proportional to 156,980.62, 235,479.09 and 51,807.79 is: 77,714.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,980.62 : 235,479.09 = 51,807.79 : x
  2. Step 2: Convert to fraction form
    156,980.62/235,479.09 = 51,807.79/x
  3. Step 3: Cross multiply
    156,980.62x = 235,479.09 × 51,807.79
  4. Step 4: Simplify right side
    156,980.62x = 12,199,651,244.11
  5. Step 5: Solve for x
    x = 12,199,651,244.11/156,980.62
  6. Step 6: Final answer
    x = 77,714.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.