Home / 145,612.25-218,418.20-45,781.16

Finding the Fourth Proportional to 145,612.25, 218,418.20 and 45,781.16

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Solution

The fourth proportional to 145,612.25, 218,418.20 and 45,781.16 is: 68,671.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,612.25 : 218,418.20 = 45,781.16 : x
  2. Step 2: Convert to fraction form
    145,612.25/218,418.20 = 45,781.16/x
  3. Step 3: Cross multiply
    145,612.25x = 218,418.20 × 45,781.16
  4. Step 4: Simplify right side
    145,612.25x = 9,999,438,332.21
  5. Step 5: Solve for x
    x = 9,999,438,332.21/145,612.25
  6. Step 6: Final answer
    x = 68,671.68

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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.