Home / 128,146.71-176,725.46-97,875.80

Finding the Fourth Proportional to 128,146.71, 176,725.46 and 97,875.80

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Solution

The fourth proportional to 128,146.71, 176,725.46 and 97,875.80 is: 134,979.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,146.71 : 176,725.46 = 97,875.80 : x
  2. Step 2: Convert to fraction form
    128,146.71/176,725.46 = 97,875.80/x
  3. Step 3: Cross multiply
    128,146.71x = 176,725.46 × 97,875.80
  4. Step 4: Simplify right side
    128,146.71x = 17,297,145,777.87
  5. Step 5: Solve for x
    x = 17,297,145,777.87/128,146.71
  6. Step 6: Final answer
    x = 134,979.24

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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.