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Finding the Fourth Proportional to 145,594.65, 200,920.20 and 81,932.45

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Solution

The fourth proportional to 145,594.65, 200,920.20 and 81,932.45 is: 113,066.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,594.65 : 200,920.20 = 81,932.45 : x
  2. Step 2: Convert to fraction form
    145,594.65/200,920.20 = 81,932.45/x
  3. Step 3: Cross multiply
    145,594.65x = 200,920.20 × 81,932.45
  4. Step 4: Simplify right side
    145,594.65x = 16,461,883,235.89
  5. Step 5: Solve for x
    x = 16,461,883,235.89/145,594.65
  6. Step 6: Final answer
    x = 113,066.54

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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.