Home / 126,875.20-190,312.80-74,257.60

Finding the Fourth Proportional to 126,875.20, 190,312.80 and 74,257.60

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Solution

The fourth proportional to 126,875.20, 190,312.80 and 74,257.60 is: 111,386.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,875.20 : 190,312.80 = 74,257.60 : x
  2. Step 2: Convert to fraction form
    126,875.20/190,312.80 = 74,257.60/x
  3. Step 3: Cross multiply
    126,875.20x = 190,312.80 × 74,257.60
  4. Step 4: Simplify right side
    126,875.20x = 14,132,171,777.28
  5. Step 5: Solve for x
    x = 14,132,171,777.28/126,875.20
  6. Step 6: Final answer
    x = 111,386.40

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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.