Home / 128,239.05-176,964.39-70,875.41

Finding the Fourth Proportional to 128,239.05, 176,964.39 and 70,875.41

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Solution

The fourth proportional to 128,239.05, 176,964.39 and 70,875.41 is: 97,805.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,239.05 : 176,964.39 = 70,875.41 : x
  2. Step 2: Convert to fraction form
    128,239.05/176,964.39 = 70,875.41/x
  3. Step 3: Cross multiply
    128,239.05x = 176,964.39 × 70,875.41
  4. Step 4: Simplify right side
    128,239.05x = 12,542,423,696.65
  5. Step 5: Solve for x
    x = 12,542,423,696.65/128,239.05
  6. Step 6: Final answer
    x = 97,805.03

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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.