Home / 105,415.76-145,480.20-60,718.16

Finding the Fourth Proportional to 105,415.76, 145,480.20 and 60,718.16

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Solution

The fourth proportional to 105,415.76, 145,480.20 and 60,718.16 is: 83,794.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,415.76 : 145,480.20 = 60,718.16 : x
  2. Step 2: Convert to fraction form
    105,415.76/145,480.20 = 60,718.16/x
  3. Step 3: Cross multiply
    105,415.76x = 145,480.20 × 60,718.16
  4. Step 4: Simplify right side
    105,415.76x = 8,833,290,060.43
  5. Step 5: Solve for x
    x = 8,833,290,060.43/105,415.76
  6. Step 6: Final answer
    x = 83,794.78

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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.