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Finding the Fourth Proportional to 130,302.76, 179,825.76 and 72,940.96

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Solution

The fourth proportional to 130,302.76, 179,825.76 and 72,940.96 is: 100,662.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,302.76 : 179,825.76 = 72,940.96 : x
  2. Step 2: Convert to fraction form
    130,302.76/179,825.76 = 72,940.96/x
  3. Step 3: Cross multiply
    130,302.76x = 179,825.76 × 72,940.96
  4. Step 4: Simplify right side
    130,302.76x = 13,116,663,567.13
  5. Step 5: Solve for x
    x = 13,116,663,567.13/130,302.76
  6. Step 6: Final answer
    x = 100,662.98

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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.