Home / 269,123.70-403,685.55-128,810.10

Finding the Fourth Proportional to 269,123.70, 403,685.55 and 128,810.10

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Solution

The fourth proportional to 269,123.70, 403,685.55 and 128,810.10 is: 193,215.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,123.70 : 403,685.55 = 128,810.10 : x
  2. Step 2: Convert to fraction form
    269,123.70/403,685.55 = 128,810.10/x
  3. Step 3: Cross multiply
    269,123.70x = 403,685.55 × 128,810.10
  4. Step 4: Simplify right side
    269,123.70x = 51,998,776,064.06
  5. Step 5: Solve for x
    x = 51,998,776,064.06/269,123.70
  6. Step 6: Final answer
    x = 193,215.15

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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.