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Finding the Fourth Proportional to 130,168.68, 179,574.84 and 84,836.16

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Solution

The fourth proportional to 130,168.68, 179,574.84 and 84,836.16 is: 117,036.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,168.68 : 179,574.84 = 84,836.16 : x
  2. Step 2: Convert to fraction form
    130,168.68/179,574.84 = 84,836.16/x
  3. Step 3: Cross multiply
    130,168.68x = 179,574.84 × 84,836.16
  4. Step 4: Simplify right side
    130,168.68x = 15,234,439,858.21
  5. Step 5: Solve for x
    x = 15,234,439,858.21/130,168.68
  6. Step 6: Final answer
    x = 117,036.14

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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.