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Finding the Fourth Proportional to 162,478.97, 243,838.23 and 77,090.18

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Solution

The fourth proportional to 162,478.97, 243,838.23 and 77,090.18 is: 115,692.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,478.97 : 243,838.23 = 77,090.18 : x
  2. Step 2: Convert to fraction form
    162,478.97/243,838.23 = 77,090.18/x
  3. Step 3: Cross multiply
    162,478.97x = 243,838.23 × 77,090.18
  4. Step 4: Simplify right side
    162,478.97x = 18,797,532,656.13
  5. Step 5: Solve for x
    x = 18,797,532,656.13/162,478.97
  6. Step 6: Final answer
    x = 115,692.10

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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.