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Finding the Fourth Proportional to 156,720.40, 235,118.40 and 51,533.80

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Solution

The fourth proportional to 156,720.40, 235,118.40 and 51,533.80 is: 77,313.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,720.40 : 235,118.40 = 51,533.80 : x
  2. Step 2: Convert to fraction form
    156,720.40/235,118.40 = 51,533.80/x
  3. Step 3: Cross multiply
    156,720.40x = 235,118.40 × 51,533.80
  4. Step 4: Simplify right side
    156,720.40x = 12,116,544,601.92
  5. Step 5: Solve for x
    x = 12,116,544,601.92/156,720.40
  6. Step 6: Final answer
    x = 77,313.13

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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.