Home / 117,440.16-161,999.64-74,950.80

Finding the Fourth Proportional to 117,440.16, 161,999.64 and 74,950.80

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Solution

The fourth proportional to 117,440.16, 161,999.64 and 74,950.80 is: 103,388.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,440.16 : 161,999.64 = 74,950.80 : x
  2. Step 2: Convert to fraction form
    117,440.16/161,999.64 = 74,950.80/x
  3. Step 3: Cross multiply
    117,440.16x = 161,999.64 × 74,950.80
  4. Step 4: Simplify right side
    117,440.16x = 12,142,002,617.71
  5. Step 5: Solve for x
    x = 12,142,002,617.71/117,440.16
  6. Step 6: Final answer
    x = 103,388.85

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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.