Home / 81,827.84-122,144.40-70,215.68

Finding the Fourth Proportional to 81,827.84, 122,144.40 and 70,215.68

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Solution

The fourth proportional to 81,827.84, 122,144.40 and 70,215.68 is: 104,810.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,827.84 : 122,144.40 = 70,215.68 : x
  2. Step 2: Convert to fraction form
    81,827.84/122,144.40 = 70,215.68/x
  3. Step 3: Cross multiply
    81,827.84x = 122,144.40 × 70,215.68
  4. Step 4: Simplify right side
    81,827.84x = 8,576,452,104.19
  5. Step 5: Solve for x
    x = 8,576,452,104.19/81,827.84
  6. Step 6: Final answer
    x = 104,810.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.