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Finding the Fourth Proportional to 127,564.60, 176,039.94 and 70,979.56

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Solution

The fourth proportional to 127,564.60, 176,039.94 and 70,979.56 is: 97,952.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,564.60 : 176,039.94 = 70,979.56 : x
  2. Step 2: Convert to fraction form
    127,564.60/176,039.94 = 70,979.56/x
  3. Step 3: Cross multiply
    127,564.60x = 176,039.94 × 70,979.56
  4. Step 4: Simplify right side
    127,564.60x = 12,495,237,483.63
  5. Step 5: Solve for x
    x = 12,495,237,483.63/127,564.60
  6. Step 6: Final answer
    x = 97,952.23

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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.