Home / 128,146.22-176,838.17-70,784.40

Finding the Fourth Proportional to 128,146.22, 176,838.17 and 70,784.40

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Solution

The fourth proportional to 128,146.22, 176,838.17 and 70,784.40 is: 97,680.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,146.22 : 176,838.17 = 70,784.40 : x
  2. Step 2: Convert to fraction form
    128,146.22/176,838.17 = 70,784.40/x
  3. Step 3: Cross multiply
    128,146.22x = 176,838.17 × 70,784.40
  4. Step 4: Simplify right side
    128,146.22x = 12,517,383,760.55
  5. Step 5: Solve for x
    x = 12,517,383,760.55/128,146.22
  6. Step 6: Final answer
    x = 97,680.48

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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.