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Finding the Fourth Proportional to 162,070.20, 242,813.70 and 138,742.20

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Solution

The fourth proportional to 162,070.20, 242,813.70 and 138,742.20 is: 207,863.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,070.20 : 242,813.70 = 138,742.20 : x
  2. Step 2: Convert to fraction form
    162,070.20/242,813.70 = 138,742.20/x
  3. Step 3: Cross multiply
    162,070.20x = 242,813.70 × 138,742.20
  4. Step 4: Simplify right side
    162,070.20x = 33,688,506,928.14
  5. Step 5: Solve for x
    x = 33,688,506,928.14/162,070.20
  6. Step 6: Final answer
    x = 207,863.67

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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.