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Finding the Fourth Proportional to 130,356.38, 179,891.81 and 70,740.38

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Solution

The fourth proportional to 130,356.38, 179,891.81 and 70,740.38 is: 97,621.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,356.38 : 179,891.81 = 70,740.38 : x
  2. Step 2: Convert to fraction form
    130,356.38/179,891.81 = 70,740.38/x
  3. Step 3: Cross multiply
    130,356.38x = 179,891.81 × 70,740.38
  4. Step 4: Simplify right side
    130,356.38x = 12,725,613,745.13
  5. Step 5: Solve for x
    x = 12,725,613,745.13/130,356.38
  6. Step 6: Final answer
    x = 97,621.72

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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.