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Finding the Fourth Proportional to 145,820.20, 218,730.30 and 133,354.30

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Solution

The fourth proportional to 145,820.20, 218,730.30 and 133,354.30 is: 200,031.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,820.20 : 218,730.30 = 133,354.30 : x
  2. Step 2: Convert to fraction form
    145,820.20/218,730.30 = 133,354.30/x
  3. Step 3: Cross multiply
    145,820.20x = 218,730.30 × 133,354.30
  4. Step 4: Simplify right side
    145,820.20x = 29,168,626,045.29
  5. Step 5: Solve for x
    x = 29,168,626,045.29/145,820.20
  6. Step 6: Final answer
    x = 200,031.45

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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.