Home / 140,245.12-193,536.80-76,582.72

Finding the Fourth Proportional to 140,245.12, 193,536.80 and 76,582.72

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Solution

The fourth proportional to 140,245.12, 193,536.80 and 76,582.72 is: 105,683.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,245.12 : 193,536.80 = 76,582.72 : x
  2. Step 2: Convert to fraction form
    140,245.12/193,536.80 = 76,582.72/x
  3. Step 3: Cross multiply
    140,245.12x = 193,536.80 × 76,582.72
  4. Step 4: Simplify right side
    140,245.12x = 14,821,574,564.10
  5. Step 5: Solve for x
    x = 14,821,574,564.10/140,245.12
  6. Step 6: Final answer
    x = 105,683.35

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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.