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Finding the Fourth Proportional to 113,779.30, 156,947.78 and 73,516.80

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Solution

The fourth proportional to 113,779.30, 156,947.78 and 73,516.80 is: 101,409.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,779.30 : 156,947.78 = 73,516.80 : x
  2. Step 2: Convert to fraction form
    113,779.30/156,947.78 = 73,516.80/x
  3. Step 3: Cross multiply
    113,779.30x = 156,947.78 × 73,516.80
  4. Step 4: Simplify right side
    113,779.30x = 11,538,298,552.70
  5. Step 5: Solve for x
    x = 11,538,298,552.70/113,779.30
  6. Step 6: Final answer
    x = 101,409.47

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1.5x scale

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.