Home / 102,816.32-141,868-57,495.20

Finding the Fourth Proportional to 102,816.32, 141,868 and 57,495.20

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Solution

The fourth proportional to 102,816.32, 141,868 and 57,495.20 is: 79,333.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,816.32 : 141,868 = 57,495.20 : x
  2. Step 2: Convert to fraction form
    102,816.32/141,868 = 57,495.20/x
  3. Step 3: Cross multiply
    102,816.32x = 141,868 × 57,495.20
  4. Step 4: Simplify right side
    102,816.32x = 8,156,729,033.60
  5. Step 5: Solve for x
    x = 8,156,729,033.60/102,816.32
  6. Step 6: Final answer
    x = 79,333.02

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1.5x scale

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.