Home / 145,403.49-218,105.31-45,571.46

Finding the Fourth Proportional to 145,403.49, 218,105.31 and 45,571.46

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Solution

The fourth proportional to 145,403.49, 218,105.31 and 45,571.46 is: 68,357.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,403.49 : 218,105.31 = 45,571.46 : x
  2. Step 2: Convert to fraction form
    145,403.49/218,105.31 = 45,571.46/x
  3. Step 3: Cross multiply
    145,403.49x = 218,105.31 × 45,571.46
  4. Step 4: Simplify right side
    145,403.49x = 9,939,376,319.93
  5. Step 5: Solve for x
    x = 9,939,376,319.93/145,403.49
  6. Step 6: Final answer
    x = 68,357.21

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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.