Home / 156,918.90-235,378.35-90,563.70

Finding the Fourth Proportional to 156,918.90, 235,378.35 and 90,563.70

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Solution

The fourth proportional to 156,918.90, 235,378.35 and 90,563.70 is: 135,845.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,918.90 : 235,378.35 = 90,563.70 : x
  2. Step 2: Convert to fraction form
    156,918.90/235,378.35 = 90,563.70/x
  3. Step 3: Cross multiply
    156,918.90x = 235,378.35 × 90,563.70
  4. Step 4: Simplify right side
    156,918.90x = 21,316,734,275.90
  5. Step 5: Solve for x
    x = 21,316,734,275.90/156,918.90
  6. Step 6: Final answer
    x = 135,845.55

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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.