Home / 122,757.47-169,428.60-76,838.42

Finding the Fourth Proportional to 122,757.47, 169,428.60 and 76,838.42

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Solution

The fourth proportional to 122,757.47, 169,428.60 and 76,838.42 is: 106,051.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,757.47 : 169,428.60 = 76,838.42 : x
  2. Step 2: Convert to fraction form
    122,757.47/169,428.60 = 76,838.42/x
  3. Step 3: Cross multiply
    122,757.47x = 169,428.60 × 76,838.42
  4. Step 4: Simplify right side
    122,757.47x = 13,018,625,926.81
  5. Step 5: Solve for x
    x = 13,018,625,926.81/122,757.47
  6. Step 6: Final answer
    x = 106,051.60

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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.