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Finding the Fourth Proportional to 145,273.68, 200,442.42 and 84,809.70

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Solution

The fourth proportional to 145,273.68, 200,442.42 and 84,809.70 is: 117,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,273.68 : 200,442.42 = 84,809.70 : x
  2. Step 2: Convert to fraction form
    145,273.68/200,442.42 = 84,809.70/x
  3. Step 3: Cross multiply
    145,273.68x = 200,442.42 × 84,809.70
  4. Step 4: Simplify right side
    145,273.68x = 16,999,461,507.47
  5. Step 5: Solve for x
    x = 16,999,461,507.47/145,273.68
  6. Step 6: Final answer
    x = 117,016.80

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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.