Home / 156,782.90-235,077.15-90,190.10

Finding the Fourth Proportional to 156,782.90, 235,077.15 and 90,190.10

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Solution

The fourth proportional to 156,782.90, 235,077.15 and 90,190.10 is: 135,229.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,782.90 : 235,077.15 = 90,190.10 : x
  2. Step 2: Convert to fraction form
    156,782.90/235,077.15 = 90,190.10/x
  3. Step 3: Cross multiply
    156,782.90x = 235,077.15 × 90,190.10
  4. Step 4: Simplify right side
    156,782.90x = 21,201,631,666.22
  5. Step 5: Solve for x
    x = 21,201,631,666.22/156,782.90
  6. Step 6: Final answer
    x = 135,229.24

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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.