Home / 138,266.07-190,821.47-84,586.77

Finding the Fourth Proportional to 138,266.07, 190,821.47 and 84,586.77

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Solution

The fourth proportional to 138,266.07, 190,821.47 and 84,586.77 is: 116,738.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,266.07 : 190,821.47 = 84,586.77 : x
  2. Step 2: Convert to fraction form
    138,266.07/190,821.47 = 84,586.77/x
  3. Step 3: Cross multiply
    138,266.07x = 190,821.47 × 84,586.77
  4. Step 4: Simplify right side
    138,266.07x = 16,140,971,371.02
  5. Step 5: Solve for x
    x = 16,140,971,371.02/138,266.07
  6. Step 6: Final answer
    x = 116,738.48

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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.