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Finding the Fourth Proportional to 162,391.80, 243,393.30 and 83,465.40

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Solution

The fourth proportional to 162,391.80, 243,393.30 and 83,465.40 is: 125,098.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,391.80 : 243,393.30 = 83,465.40 : x
  2. Step 2: Convert to fraction form
    162,391.80/243,393.30 = 83,465.40/x
  3. Step 3: Cross multiply
    162,391.80x = 243,393.30 × 83,465.40
  4. Step 4: Simplify right side
    162,391.80x = 20,314,919,141.82
  5. Step 5: Solve for x
    x = 20,314,919,141.82/162,391.80
  6. Step 6: Final answer
    x = 125,098.18

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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.