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Finding the Fourth Proportional to 145,059.53, 200,172.13 and 80,523.72

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Solution

The fourth proportional to 145,059.53, 200,172.13 and 80,523.72 is: 111,117.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,059.53 : 200,172.13 = 80,523.72 : x
  2. Step 2: Convert to fraction form
    145,059.53/200,172.13 = 80,523.72/x
  3. Step 3: Cross multiply
    145,059.53x = 200,172.13 × 80,523.72
  4. Step 4: Simplify right side
    145,059.53x = 16,118,604,346.61
  5. Step 5: Solve for x
    x = 16,118,604,346.61/145,059.53
  6. Step 6: Final answer
    x = 111,117.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.