Home / 136,856.56-188,851.28-76,422.48

Finding the Fourth Proportional to 136,856.56, 188,851.28 and 76,422.48

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Solution

The fourth proportional to 136,856.56, 188,851.28 and 76,422.48 is: 105,457.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,856.56 : 188,851.28 = 76,422.48 : x
  2. Step 2: Convert to fraction form
    136,856.56/188,851.28 = 76,422.48/x
  3. Step 3: Cross multiply
    136,856.56x = 188,851.28 × 76,422.48
  4. Step 4: Simplify right side
    136,856.56x = 14,432,483,168.77
  5. Step 5: Solve for x
    x = 14,432,483,168.77/136,856.56
  6. Step 6: Final answer
    x = 105,457.01

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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.