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Finding the Fourth Proportional to 145,425.53, 200,621.63 and 84,969

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Solution

The fourth proportional to 145,425.53, 200,621.63 and 84,969 is: 117,218.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,425.53 : 200,621.63 = 84,969 : x
  2. Step 2: Convert to fraction form
    145,425.53/200,621.63 = 84,969/x
  3. Step 3: Cross multiply
    145,425.53x = 200,621.63 × 84,969
  4. Step 4: Simplify right side
    145,425.53x = 17,046,619,491.89
  5. Step 5: Solve for x
    x = 17,046,619,491.89/145,425.53
  6. Step 6: Final answer
    x = 117,218.89

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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.