Home / 138,301.42-190,483.23-119,405.74

Finding the Fourth Proportional to 138,301.42, 190,483.23 and 119,405.74

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Solution

The fourth proportional to 138,301.42, 190,483.23 and 119,405.74 is: 164,458.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,301.42 : 190,483.23 = 119,405.74 : x
  2. Step 2: Convert to fraction form
    138,301.42/190,483.23 = 119,405.74/x
  3. Step 3: Cross multiply
    138,301.42x = 190,483.23 × 119,405.74
  4. Step 4: Simplify right side
    138,301.42x = 22,744,791,035.74
  5. Step 5: Solve for x
    x = 22,744,791,035.74/138,301.42
  6. Step 6: Final answer
    x = 164,458.12

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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.