Home / 145,582.32-200,906.67-81,920.10

Finding the Fourth Proportional to 145,582.32, 200,906.67 and 81,920.10

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Solution

The fourth proportional to 145,582.32, 200,906.67 and 81,920.10 is: 113,051.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,582.32 : 200,906.67 = 81,920.10 : x
  2. Step 2: Convert to fraction form
    145,582.32/200,906.67 = 81,920.10/x
  3. Step 3: Cross multiply
    145,582.32x = 200,906.67 × 81,920.10
  4. Step 4: Simplify right side
    145,582.32x = 16,458,294,497.07
  5. Step 5: Solve for x
    x = 16,458,294,497.07/145,582.32
  6. Step 6: Final answer
    x = 113,051.46

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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.