Home / 129,035.20-193,261.20-76,547.20

Finding the Fourth Proportional to 129,035.20, 193,261.20 and 76,547.20

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Solution

The fourth proportional to 129,035.20, 193,261.20 and 76,547.20 is: 114,647.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,035.20 : 193,261.20 = 76,547.20 : x
  2. Step 2: Convert to fraction form
    129,035.20/193,261.20 = 76,547.20/x
  3. Step 3: Cross multiply
    129,035.20x = 193,261.20 × 76,547.20
  4. Step 4: Simplify right side
    129,035.20x = 14,793,603,728.64
  5. Step 5: Solve for x
    x = 14,793,603,728.64/129,035.20
  6. Step 6: Final answer
    x = 114,647.81

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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.