Home / 102,722.15-141,756.25-57,400.18

Finding the Fourth Proportional to 102,722.15, 141,756.25 and 57,400.18

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Solution

The fourth proportional to 102,722.15, 141,756.25 and 57,400.18 is: 79,212.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,722.15 : 141,756.25 = 57,400.18 : x
  2. Step 2: Convert to fraction form
    102,722.15/141,756.25 = 57,400.18/x
  3. Step 3: Cross multiply
    102,722.15x = 141,756.25 × 57,400.18
  4. Step 4: Simplify right side
    102,722.15x = 8,136,834,037.30
  5. Step 5: Solve for x
    x = 8,136,834,037.30/102,722.15
  6. Step 6: Final answer
    x = 79,212.07

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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.