Home / 102,683.21-141,643.69-61,818.91

Finding the Fourth Proportional to 102,683.21, 141,643.69 and 61,818.91

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Solution

The fourth proportional to 102,683.21, 141,643.69 and 61,818.91 is: 85,274.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,683.21 : 141,643.69 = 61,818.91 : x
  2. Step 2: Convert to fraction form
    102,683.21/141,643.69 = 61,818.91/x
  3. Step 3: Cross multiply
    102,683.21x = 141,643.69 × 61,818.91
  4. Step 4: Simplify right side
    102,683.21x = 8,756,258,015.52
  5. Step 5: Solve for x
    x = 8,756,258,015.52/102,683.21
  6. Step 6: Final answer
    x = 85,274.49

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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.