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Finding the Fourth Proportional to 145,871.27, 201,318.45 and 84,630.95

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Solution

The fourth proportional to 145,871.27, 201,318.45 and 84,630.95 is: 116,800.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,871.27 : 201,318.45 = 84,630.95 : x
  2. Step 2: Convert to fraction form
    145,871.27/201,318.45 = 84,630.95/x
  3. Step 3: Cross multiply
    145,871.27x = 201,318.45 × 84,630.95
  4. Step 4: Simplify right side
    145,871.27x = 17,037,771,676.03
  5. Step 5: Solve for x
    x = 17,037,771,676.03/145,871.27
  6. Step 6: Final answer
    x = 116,800.05

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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.