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Finding the Fourth Proportional to 162,028.40, 243,042.60 and 99,042.80

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Solution

The fourth proportional to 162,028.40, 243,042.60 and 99,042.80 is: 148,564.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,028.40 : 243,042.60 = 99,042.80 : x
  2. Step 2: Convert to fraction form
    162,028.40/243,042.60 = 99,042.80/x
  3. Step 3: Cross multiply
    162,028.40x = 243,042.60 × 99,042.80
  4. Step 4: Simplify right side
    162,028.40x = 24,071,619,623.28
  5. Step 5: Solve for x
    x = 24,071,619,623.28/162,028.40
  6. Step 6: Final answer
    x = 148,564.20

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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.