Home / 145,412.21-218,118.33-45,572.39

Finding the Fourth Proportional to 145,412.21, 218,118.33 and 45,572.39

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Solution

The fourth proportional to 145,412.21, 218,118.33 and 45,572.39 is: 68,358.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,412.21 : 218,118.33 = 45,572.39 : x
  2. Step 2: Convert to fraction form
    145,412.21/218,118.33 = 45,572.39/x
  3. Step 3: Cross multiply
    145,412.21x = 218,118.33 × 45,572.39
  4. Step 4: Simplify right side
    145,412.21x = 9,940,173,600.91
  5. Step 5: Solve for x
    x = 9,940,173,600.91/145,412.21
  6. Step 6: Final answer
    x = 68,358.59

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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.