Home / 130,478.25-178,710.81-122,818.26

Finding the Fourth Proportional to 130,478.25, 178,710.81 and 122,818.26

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Solution

The fourth proportional to 130,478.25, 178,710.81 and 122,818.26 is: 168,219.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,478.25 : 178,710.81 = 122,818.26 : x
  2. Step 2: Convert to fraction form
    130,478.25/178,710.81 = 122,818.26/x
  3. Step 3: Cross multiply
    130,478.25x = 178,710.81 × 122,818.26
  4. Step 4: Simplify right side
    130,478.25x = 21,948,950,727.39
  5. Step 5: Solve for x
    x = 21,948,950,727.39/130,478.25
  6. Step 6: Final answer
    x = 168,219.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.