Home / 82,009.60-122,801.59-70,239.03

Finding the Fourth Proportional to 82,009.60, 122,801.59 and 70,239.03

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Solution

The fourth proportional to 82,009.60, 122,801.59 and 70,239.03 is: 105,176.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,009.60 : 122,801.59 = 70,239.03 : x
  2. Step 2: Convert to fraction form
    82,009.60/122,801.59 = 70,239.03/x
  3. Step 3: Cross multiply
    82,009.60x = 122,801.59 × 70,239.03
  4. Step 4: Simplify right side
    82,009.60x = 8,625,464,487.01
  5. Step 5: Solve for x
    x = 8,625,464,487.01/82,009.60
  6. Step 6: Final answer
    x = 105,176.28

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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.