Home / 86,331.42-118,899.09-74,390.40

Finding the Fourth Proportional to 86,331.42, 118,899.09 and 74,390.40

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Solution

The fourth proportional to 86,331.42, 118,899.09 and 74,390.40 is: 102,453.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,331.42 : 118,899.09 = 74,390.40 : x
  2. Step 2: Convert to fraction form
    86,331.42/118,899.09 = 74,390.40/x
  3. Step 3: Cross multiply
    86,331.42x = 118,899.09 × 74,390.40
  4. Step 4: Simplify right side
    86,331.42x = 8,844,950,864.74
  5. Step 5: Solve for x
    x = 8,844,950,864.74/86,331.42
  6. Step 6: Final answer
    x = 102,453.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.