Home / 138,333.76-190,828.37-87,328.13

Finding the Fourth Proportional to 138,333.76, 190,828.37 and 87,328.13

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Solution

The fourth proportional to 138,333.76, 190,828.37 and 87,328.13 is: 120,467.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,333.76 : 190,828.37 = 87,328.13 : x
  2. Step 2: Convert to fraction form
    138,333.76/190,828.37 = 87,328.13/x
  3. Step 3: Cross multiply
    138,333.76x = 190,828.37 × 87,328.13
  4. Step 4: Simplify right side
    138,333.76x = 16,664,683,967.23
  5. Step 5: Solve for x
    x = 16,664,683,967.23/138,333.76
  6. Step 6: Final answer
    x = 120,467.23

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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.