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Finding the Fourth Proportional to 162,003.60, 243,005.40 and 142,320.60

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Solution

The fourth proportional to 162,003.60, 243,005.40 and 142,320.60 is: 213,480.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,003.60 : 243,005.40 = 142,320.60 : x
  2. Step 2: Convert to fraction form
    162,003.60/243,005.40 = 142,320.60/x
  3. Step 3: Cross multiply
    162,003.60x = 243,005.40 × 142,320.60
  4. Step 4: Simplify right side
    162,003.60x = 34,584,674,331.24
  5. Step 5: Solve for x
    x = 34,584,674,331.24/162,003.60
  6. Step 6: Final answer
    x = 213,480.90

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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.