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Finding the Fourth Proportional to 145,912.51, 218,967.25 and 57,155.01

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Solution

The fourth proportional to 145,912.51, 218,967.25 and 57,155.01 is: 85,771.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,912.51 : 218,967.25 = 57,155.01 : x
  2. Step 2: Convert to fraction form
    145,912.51/218,967.25 = 57,155.01/x
  3. Step 3: Cross multiply
    145,912.51x = 218,967.25 × 57,155.01
  4. Step 4: Simplify right side
    145,912.51x = 12,515,075,363.42
  5. Step 5: Solve for x
    x = 12,515,075,363.42/145,912.51
  6. Step 6: Final answer
    x = 85,771.09

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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.