Home / 137,929.40-190,322.16-79,784.36

Finding the Fourth Proportional to 137,929.40, 190,322.16 and 79,784.36

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Solution

The fourth proportional to 137,929.40, 190,322.16 and 79,784.36 is: 110,090.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,929.40 : 190,322.16 = 79,784.36 : x
  2. Step 2: Convert to fraction form
    137,929.40/190,322.16 = 79,784.36/x
  3. Step 3: Cross multiply
    137,929.40x = 190,322.16 × 79,784.36
  4. Step 4: Simplify right side
    137,929.40x = 15,184,731,729.42
  5. Step 5: Solve for x
    x = 15,184,731,729.42/137,929.40
  6. Step 6: Final answer
    x = 110,090.61

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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.