Home / 145,608.78-218,412.93-45,777.69

Finding the Fourth Proportional to 145,608.78, 218,412.93 and 45,777.69

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Solution

The fourth proportional to 145,608.78, 218,412.93 and 45,777.69 is: 68,666.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,608.78 : 218,412.93 = 45,777.69 : x
  2. Step 2: Convert to fraction form
    145,608.78/218,412.93 = 45,777.69/x
  3. Step 3: Cross multiply
    145,608.78x = 218,412.93 × 45,777.69
  4. Step 4: Simplify right side
    145,608.78x = 9,998,439,401.53
  5. Step 5: Solve for x
    x = 9,998,439,401.53/145,608.78
  6. Step 6: Final answer
    x = 68,666.46

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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.