Home / 156,913.40-235,370.10-90,558.20

Finding the Fourth Proportional to 156,913.40, 235,370.10 and 90,558.20

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Solution

The fourth proportional to 156,913.40, 235,370.10 and 90,558.20 is: 135,837.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,913.40 : 235,370.10 = 90,558.20 : x
  2. Step 2: Convert to fraction form
    156,913.40/235,370.10 = 90,558.20/x
  3. Step 3: Cross multiply
    156,913.40x = 235,370.10 × 90,558.20
  4. Step 4: Simplify right side
    156,913.40x = 21,314,692,589.82
  5. Step 5: Solve for x
    x = 21,314,692,589.82/156,913.40
  6. Step 6: Final answer
    x = 135,837.30

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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.