Home / 156,748.64-235,134.24-77,783.36

Finding the Fourth Proportional to 156,748.64, 235,134.24 and 77,783.36

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Solution

The fourth proportional to 156,748.64, 235,134.24 and 77,783.36 is: 116,680.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,748.64 : 235,134.24 = 77,783.36 : x
  2. Step 2: Convert to fraction form
    156,748.64/235,134.24 = 77,783.36/x
  3. Step 3: Cross multiply
    156,748.64x = 235,134.24 × 77,783.36
  4. Step 4: Simplify right side
    156,748.64x = 18,289,531,238.25
  5. Step 5: Solve for x
    x = 18,289,531,238.25/156,748.64
  6. Step 6: Final answer
    x = 116,680.64

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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.