Home / 266,688.09-400,094.09-77,140.80

Finding the Fourth Proportional to 266,688.09, 400,094.09 and 77,140.80

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Solution

The fourth proportional to 266,688.09, 400,094.09 and 77,140.80 is: 115,729.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,688.09 : 400,094.09 = 77,140.80 : x
  2. Step 2: Convert to fraction form
    266,688.09/400,094.09 = 77,140.80/x
  3. Step 3: Cross multiply
    266,688.09x = 400,094.09 × 77,140.80
  4. Step 4: Simplify right side
    266,688.09x = 30,863,578,177.87
  5. Step 5: Solve for x
    x = 30,863,578,177.87/266,688.09
  6. Step 6: Final answer
    x = 115,729.12

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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.