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Finding the Fourth Proportional to 145,893.79, 218,778.69 and 57,133.18

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Solution

The fourth proportional to 145,893.79, 218,778.69 and 57,133.18 is: 85,675.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,893.79 : 218,778.69 = 57,133.18 : x
  2. Step 2: Convert to fraction form
    145,893.79/218,778.69 = 57,133.18/x
  3. Step 3: Cross multiply
    145,893.79x = 218,778.69 × 57,133.18
  4. Step 4: Simplify right side
    145,893.79x = 12,499,521,728.99
  5. Step 5: Solve for x
    x = 12,499,521,728.99/145,893.79
  6. Step 6: Final answer
    x = 85,675.49

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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.