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Finding the Fourth Proportional to 162,078.20, 242,825.70 and 138,750.20

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Solution

The fourth proportional to 162,078.20, 242,825.70 and 138,750.20 is: 207,875.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,078.20 : 242,825.70 = 138,750.20 : x
  2. Step 2: Convert to fraction form
    162,078.20/242,825.70 = 138,750.20/x
  3. Step 3: Cross multiply
    162,078.20x = 242,825.70 × 138,750.20
  4. Step 4: Simplify right side
    162,078.20x = 33,692,114,440.14
  5. Step 5: Solve for x
    x = 33,692,114,440.14/162,078.20
  6. Step 6: Final answer
    x = 207,875.67

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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.