Home / 138,320.46-190,886.04-84,604.50

Finding the Fourth Proportional to 138,320.46, 190,886.04 and 84,604.50

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Solution

The fourth proportional to 138,320.46, 190,886.04 and 84,604.50 is: 116,756.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,320.46 : 190,886.04 = 84,604.50 : x
  2. Step 2: Convert to fraction form
    138,320.46/190,886.04 = 84,604.50/x
  3. Step 3: Cross multiply
    138,320.46x = 190,886.04 × 84,604.50
  4. Step 4: Simplify right side
    138,320.46x = 16,149,817,971.18
  5. Step 5: Solve for x
    x = 16,149,817,971.18/138,320.46
  6. Step 6: Final answer
    x = 116,756.54

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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.