Home / 156,427.08-215,812.80-102,741.20

Finding the Fourth Proportional to 156,427.08, 215,812.80 and 102,741.20

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Solution

The fourth proportional to 156,427.08, 215,812.80 and 102,741.20 is: 141,745.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,427.08 : 215,812.80 = 102,741.20 : x
  2. Step 2: Convert to fraction form
    156,427.08/215,812.80 = 102,741.20/x
  3. Step 3: Cross multiply
    156,427.08x = 215,812.80 × 102,741.20
  4. Step 4: Simplify right side
    156,427.08x = 22,172,866,047.36
  5. Step 5: Solve for x
    x = 22,172,866,047.36/156,427.08
  6. Step 6: Final answer
    x = 141,745.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.