Home / 103,831.72-143,287.78-56,085.07

Finding the Fourth Proportional to 103,831.72, 143,287.78 and 56,085.07

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Solution

The fourth proportional to 103,831.72, 143,287.78 and 56,085.07 is: 77,397.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,831.72 : 143,287.78 = 56,085.07 : x
  2. Step 2: Convert to fraction form
    103,831.72/143,287.78 = 56,085.07/x
  3. Step 3: Cross multiply
    103,831.72x = 143,287.78 × 56,085.07
  4. Step 4: Simplify right side
    103,831.72x = 8,036,305,208.90
  5. Step 5: Solve for x
    x = 8,036,305,208.90/103,831.72
  6. Step 6: Final answer
    x = 77,397.40

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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.