Home / 127,139.30-190,677-52,280.36

Finding the Fourth Proportional to 127,139.30, 190,677 and 52,280.36

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Solution

The fourth proportional to 127,139.30, 190,677 and 52,280.36 is: 78,407.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,139.30 : 190,677 = 52,280.36 : x
  2. Step 2: Convert to fraction form
    127,139.30/190,677 = 52,280.36/x
  3. Step 3: Cross multiply
    127,139.30x = 190,677 × 52,280.36
  4. Step 4: Simplify right side
    127,139.30x = 9,968,662,203.72
  5. Step 5: Solve for x
    x = 9,968,662,203.72/127,139.30
  6. Step 6: Final answer
    x = 78,407.40

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1.5x scale

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.