Home / 115,420.48-159,284.40-67,018.78

Finding the Fourth Proportional to 115,420.48, 159,284.40 and 67,018.78

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Solution

The fourth proportional to 115,420.48, 159,284.40 and 67,018.78 is: 92,488.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,420.48 : 159,284.40 = 67,018.78 : x
  2. Step 2: Convert to fraction form
    115,420.48/159,284.40 = 67,018.78/x
  3. Step 3: Cross multiply
    115,420.48x = 159,284.40 × 67,018.78
  4. Step 4: Simplify right side
    115,420.48x = 10,675,046,161.03
  5. Step 5: Solve for x
    x = 10,675,046,161.03/115,420.48
  6. Step 6: Final answer
    x = 92,488.32

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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.