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Finding the Fourth Proportional to 145,398.79, 200,620.62 and 84,957.75

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Solution

The fourth proportional to 145,398.79, 200,620.62 and 84,957.75 is: 117,224.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,398.79 : 200,620.62 = 84,957.75 : x
  2. Step 2: Convert to fraction form
    145,398.79/200,620.62 = 84,957.75/x
  3. Step 3: Cross multiply
    145,398.79x = 200,620.62 × 84,957.75
  4. Step 4: Simplify right side
    145,398.79x = 17,044,276,801.59
  5. Step 5: Solve for x
    x = 17,044,276,801.59/145,398.79
  6. Step 6: Final answer
    x = 117,224.34

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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.