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Finding the Fourth Proportional to 127,076, 190,614 and 87,055.52

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Solution

The fourth proportional to 127,076, 190,614 and 87,055.52 is: 130,583.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,076 : 190,614 = 87,055.52 : x
  2. Step 2: Convert to fraction form
    127,076/190,614 = 87,055.52/x
  3. Step 3: Cross multiply
    127,076x = 190,614 × 87,055.52
  4. Step 4: Simplify right side
    127,076x = 16,594,000,889.28
  5. Step 5: Solve for x
    x = 16,594,000,889.28/127,076
  6. Step 6: Final answer
    x = 130,583.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.