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Finding the Fourth Proportional to 124,312.40, 186,533.40 and 54,198.80

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Solution

The fourth proportional to 124,312.40, 186,533.40 and 54,198.80 is: 81,326.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,312.40 : 186,533.40 = 54,198.80 : x
  2. Step 2: Convert to fraction form
    124,312.40/186,533.40 = 54,198.80/x
  3. Step 3: Cross multiply
    124,312.40x = 186,533.40 × 54,198.80
  4. Step 4: Simplify right side
    124,312.40x = 10,109,886,439.92
  5. Step 5: Solve for x
    x = 10,109,886,439.92/124,312.40
  6. Step 6: Final answer
    x = 81,326.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.