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Finding the Fourth Proportional to 145,758.89, 218,534.79 and 55,725.71

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Solution

The fourth proportional to 145,758.89, 218,534.79 and 55,725.71 is: 83,548.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,758.89 : 218,534.79 = 55,725.71 : x
  2. Step 2: Convert to fraction form
    145,758.89/218,534.79 = 55,725.71/x
  3. Step 3: Cross multiply
    145,758.89x = 218,534.79 × 55,725.71
  4. Step 4: Simplify right side
    145,758.89x = 12,178,005,448.75
  5. Step 5: Solve for x
    x = 12,178,005,448.75/145,758.89
  6. Step 6: Final answer
    x = 83,548.97

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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.