Home / 102,722.10-141,754.77-57,400.98

Finding the Fourth Proportional to 102,722.10, 141,754.77 and 57,400.98

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Solution

The fourth proportional to 102,722.10, 141,754.77 and 57,400.98 is: 79,212.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,722.10 : 141,754.77 = 57,400.98 : x
  2. Step 2: Convert to fraction form
    102,722.10/141,754.77 = 57,400.98/x
  3. Step 3: Cross multiply
    102,722.10x = 141,754.77 × 57,400.98
  4. Step 4: Simplify right side
    102,722.10x = 8,136,862,717.67
  5. Step 5: Solve for x
    x = 8,136,862,717.67/102,722.10
  6. Step 6: Final answer
    x = 79,212.39

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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.