Home / 109,718.88-151,412.16-61,972.32

Finding the Fourth Proportional to 109,718.88, 151,412.16 and 61,972.32

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Solution

The fourth proportional to 109,718.88, 151,412.16 and 61,972.32 is: 85,521.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,718.88 : 151,412.16 = 61,972.32 : x
  2. Step 2: Convert to fraction form
    109,718.88/151,412.16 = 61,972.32/x
  3. Step 3: Cross multiply
    109,718.88x = 151,412.16 × 61,972.32
  4. Step 4: Simplify right side
    109,718.88x = 9,383,362,831.41
  5. Step 5: Solve for x
    x = 9,383,362,831.41/109,718.88
  6. Step 6: Final answer
    x = 85,521.86

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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.