Home / 156,810.40-235,215.60-38,480.20

Finding the Fourth Proportional to 156,810.40, 235,215.60 and 38,480.20

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Solution

The fourth proportional to 156,810.40, 235,215.60 and 38,480.20 is: 57,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,810.40 : 235,215.60 = 38,480.20 : x
  2. Step 2: Convert to fraction form
    156,810.40/235,215.60 = 38,480.20/x
  3. Step 3: Cross multiply
    156,810.40x = 235,215.60 × 38,480.20
  4. Step 4: Simplify right side
    156,810.40x = 9,051,143,331.12
  5. Step 5: Solve for x
    x = 9,051,143,331.12/156,810.40
  6. Step 6: Final answer
    x = 57,720.30

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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.