Home / 165,720.20-248,666.70-72,235.40

Finding the Fourth Proportional to 165,720.20, 248,666.70 and 72,235.40

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Solution

The fourth proportional to 165,720.20, 248,666.70 and 72,235.40 is: 108,390.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,720.20 : 248,666.70 = 72,235.40 : x
  2. Step 2: Convert to fraction form
    165,720.20/248,666.70 = 72,235.40/x
  3. Step 3: Cross multiply
    165,720.20x = 248,666.70 × 72,235.40
  4. Step 4: Simplify right side
    165,720.20x = 17,962,538,541.18
  5. Step 5: Solve for x
    x = 17,962,538,541.18/165,720.20
  6. Step 6: Final answer
    x = 108,390.76

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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.