Home / 122,784.35-169,389.99-70,368.56

Finding the Fourth Proportional to 122,784.35, 169,389.99 and 70,368.56

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Solution

The fourth proportional to 122,784.35, 169,389.99 and 70,368.56 is: 97,078.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,784.35 : 169,389.99 = 70,368.56 : x
  2. Step 2: Convert to fraction form
    122,784.35/169,389.99 = 70,368.56/x
  3. Step 3: Cross multiply
    122,784.35x = 169,389.99 × 70,368.56
  4. Step 4: Simplify right side
    122,784.35x = 11,919,729,322.87
  5. Step 5: Solve for x
    x = 11,919,729,322.87/122,784.35
  6. Step 6: Final answer
    x = 97,078.58

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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.