Home / 128,004.28-176,617.63-74,258.15

Finding the Fourth Proportional to 128,004.28, 176,617.63 and 74,258.15

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Solution

The fourth proportional to 128,004.28, 176,617.63 and 74,258.15 is: 102,459.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,004.28 : 176,617.63 = 74,258.15 : x
  2. Step 2: Convert to fraction form
    128,004.28/176,617.63 = 74,258.15/x
  3. Step 3: Cross multiply
    128,004.28x = 176,617.63 × 74,258.15
  4. Step 4: Simplify right side
    128,004.28x = 13,115,299,543.91
  5. Step 5: Solve for x
    x = 13,115,299,543.91/128,004.28
  6. Step 6: Final answer
    x = 102,459.85

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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.