Home / 115,931.28-173,640.02-89,079.60

Finding the Fourth Proportional to 115,931.28, 173,640.02 and 89,079.60

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Solution

The fourth proportional to 115,931.28, 173,640.02 and 89,079.60 is: 133,422.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,931.28 : 173,640.02 = 89,079.60 : x
  2. Step 2: Convert to fraction form
    115,931.28/173,640.02 = 89,079.60/x
  3. Step 3: Cross multiply
    115,931.28x = 173,640.02 × 89,079.60
  4. Step 4: Simplify right side
    115,931.28x = 15,467,783,525.59
  5. Step 5: Solve for x
    x = 15,467,783,525.59/115,931.28
  6. Step 6: Final answer
    x = 133,422.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.