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Finding the Fourth Proportional to 127,143.84, 175,458.86 and 69,783.63

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Solution

The fourth proportional to 127,143.84, 175,458.86 and 69,783.63 is: 96,301.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,143.84 : 175,458.86 = 69,783.63 : x
  2. Step 2: Convert to fraction form
    127,143.84/175,458.86 = 69,783.63/x
  3. Step 3: Cross multiply
    127,143.84x = 175,458.86 × 69,783.63
  4. Step 4: Simplify right side
    127,143.84x = 12,244,155,817.54
  5. Step 5: Solve for x
    x = 12,244,155,817.54/127,143.84
  6. Step 6: Final answer
    x = 96,301.60

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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.