Home / 103,085.49-154,434.23-80,831.28

Finding the Fourth Proportional to 103,085.49, 154,434.23 and 80,831.28

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Solution

The fourth proportional to 103,085.49, 154,434.23 and 80,831.28 is: 121,094.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,085.49 : 154,434.23 = 80,831.28 : x
  2. Step 2: Convert to fraction form
    103,085.49/154,434.23 = 80,831.28/x
  3. Step 3: Cross multiply
    103,085.49x = 154,434.23 × 80,831.28
  4. Step 4: Simplify right side
    103,085.49x = 12,483,115,916.62
  5. Step 5: Solve for x
    x = 12,483,115,916.62/103,085.49
  6. Step 6: Final answer
    x = 121,094.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.