Home / 156,781.90-235,075.65-90,189.10

Finding the Fourth Proportional to 156,781.90, 235,075.65 and 90,189.10

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Solution

The fourth proportional to 156,781.90, 235,075.65 and 90,189.10 is: 135,227.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,781.90 : 235,075.65 = 90,189.10 : x
  2. Step 2: Convert to fraction form
    156,781.90/235,075.65 = 90,189.10/x
  3. Step 3: Cross multiply
    156,781.90x = 235,075.65 × 90,189.10
  4. Step 4: Simplify right side
    156,781.90x = 21,201,261,305.42
  5. Step 5: Solve for x
    x = 21,201,261,305.42/156,781.90
  6. Step 6: Final answer
    x = 135,227.74

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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.