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Finding the Fourth Proportional to 127,649.63, 176,149.59 and 70,277.78

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Solution

The fourth proportional to 127,649.63, 176,149.59 and 70,277.78 is: 96,979.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,649.63 : 176,149.59 = 70,277.78 : x
  2. Step 2: Convert to fraction form
    127,649.63/176,149.59 = 70,277.78/x
  3. Step 3: Cross multiply
    127,649.63x = 176,149.59 × 70,277.78
  4. Step 4: Simplify right side
    127,649.63x = 12,379,402,133.11
  5. Step 5: Solve for x
    x = 12,379,402,133.11/127,649.63
  6. Step 6: Final answer
    x = 96,979.54

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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.