Home / 136,829.88-188,823.27-76,401.47

Finding the Fourth Proportional to 136,829.88, 188,823.27 and 76,401.47

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Solution

The fourth proportional to 136,829.88, 188,823.27 and 76,401.47 is: 105,432.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,829.88 : 188,823.27 = 76,401.47 : x
  2. Step 2: Convert to fraction form
    136,829.88/188,823.27 = 76,401.47/x
  3. Step 3: Cross multiply
    136,829.88x = 188,823.27 × 76,401.47
  4. Step 4: Simplify right side
    136,829.88x = 14,426,376,156.77
  5. Step 5: Solve for x
    x = 14,426,376,156.77/136,829.88
  6. Step 6: Final answer
    x = 105,432.94

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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.