Home / 128,174.32-176,968.02-82,961.74

Finding the Fourth Proportional to 128,174.32, 176,968.02 and 82,961.74

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Solution

The fourth proportional to 128,174.32, 176,968.02 and 82,961.74 is: 114,543.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,174.32 : 176,968.02 = 82,961.74 : x
  2. Step 2: Convert to fraction form
    128,174.32/176,968.02 = 82,961.74/x
  3. Step 3: Cross multiply
    128,174.32x = 176,968.02 × 82,961.74
  4. Step 4: Simplify right side
    128,174.32x = 14,681,574,863.55
  5. Step 5: Solve for x
    x = 14,681,574,863.55/128,174.32
  6. Step 6: Final answer
    x = 114,543.81

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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.