Home / 145,231.42-200,420.15-81,569.22

Finding the Fourth Proportional to 145,231.42, 200,420.15 and 81,569.22

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Solution

The fourth proportional to 145,231.42, 200,420.15 and 81,569.22 is: 112,565.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,231.42 : 200,420.15 = 81,569.22 : x
  2. Step 2: Convert to fraction form
    145,231.42/200,420.15 = 81,569.22/x
  3. Step 3: Cross multiply
    145,231.42x = 200,420.15 × 81,569.22
  4. Step 4: Simplify right side
    145,231.42x = 16,348,115,307.78
  5. Step 5: Solve for x
    x = 16,348,115,307.78/145,231.42
  6. Step 6: Final answer
    x = 112,565.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.