Home / 108,740.72-163,140.24-86,637.44

Finding the Fourth Proportional to 108,740.72, 163,140.24 and 86,637.44

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Solution

The fourth proportional to 108,740.72, 163,140.24 and 86,637.44 is: 129,979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,740.72 : 163,140.24 = 86,637.44 : x
  2. Step 2: Convert to fraction form
    108,740.72/163,140.24 = 86,637.44/x
  3. Step 3: Cross multiply
    108,740.72x = 163,140.24 × 86,637.44
  4. Step 4: Simplify right side
    108,740.72x = 14,134,052,754.59
  5. Step 5: Solve for x
    x = 14,134,052,754.59/108,740.72
  6. Step 6: Final answer
    x = 129,979.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.