Home / 165,276.80-247,742.40-90,281.60

Finding the Fourth Proportional to 165,276.80, 247,742.40 and 90,281.60

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Solution

The fourth proportional to 165,276.80, 247,742.40 and 90,281.60 is: 135,328.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,276.80 : 247,742.40 = 90,281.60 : x
  2. Step 2: Convert to fraction form
    165,276.80/247,742.40 = 90,281.60/x
  3. Step 3: Cross multiply
    165,276.80x = 247,742.40 × 90,281.60
  4. Step 4: Simplify right side
    165,276.80x = 22,366,580,259.84
  5. Step 5: Solve for x
    x = 22,366,580,259.84/165,276.80
  6. Step 6: Final answer
    x = 135,328.01

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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.