Home / 145,540.10-200,831.05-81,876.53

Finding the Fourth Proportional to 145,540.10, 200,831.05 and 81,876.53

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Solution

The fourth proportional to 145,540.10, 200,831.05 and 81,876.53 is: 112,981.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,540.10 : 200,831.05 = 81,876.53 : x
  2. Step 2: Convert to fraction form
    145,540.10/200,831.05 = 81,876.53/x
  3. Step 3: Cross multiply
    145,540.10x = 200,831.05 × 81,876.53
  4. Step 4: Simplify right side
    145,540.10x = 16,443,349,490.26
  5. Step 5: Solve for x
    x = 16,443,349,490.26/145,540.10
  6. Step 6: Final answer
    x = 112,981.57

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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.