Home / 162,665.40-243,998.10-115,426.20

Finding the Fourth Proportional to 162,665.40, 243,998.10 and 115,426.20

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Solution

The fourth proportional to 162,665.40, 243,998.10 and 115,426.20 is: 173,139.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,665.40 : 243,998.10 = 115,426.20 : x
  2. Step 2: Convert to fraction form
    162,665.40/243,998.10 = 115,426.20/x
  3. Step 3: Cross multiply
    162,665.40x = 243,998.10 × 115,426.20
  4. Step 4: Simplify right side
    162,665.40x = 28,163,773,490.22
  5. Step 5: Solve for x
    x = 28,163,773,490.22/162,665.40
  6. Step 6: Final answer
    x = 173,139.30

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1.5x scale

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.