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Finding the Fourth Proportional to 145,907.40, 218,861.10 and 121,024.20

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Solution

The fourth proportional to 145,907.40, 218,861.10 and 121,024.20 is: 181,536.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,907.40 : 218,861.10 = 121,024.20 : x
  2. Step 2: Convert to fraction form
    145,907.40/218,861.10 = 121,024.20/x
  3. Step 3: Cross multiply
    145,907.40x = 218,861.10 × 121,024.20
  4. Step 4: Simplify right side
    145,907.40x = 26,487,489,538.62
  5. Step 5: Solve for x
    x = 26,487,489,538.62/145,907.40
  6. Step 6: Final answer
    x = 181,536.30

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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.