Home / 105,213.72-145,192.62-57,467.22

Finding the Fourth Proportional to 105,213.72, 145,192.62 and 57,467.22

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Solution

The fourth proportional to 105,213.72, 145,192.62 and 57,467.22 is: 79,303.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,213.72 : 145,192.62 = 57,467.22 : x
  2. Step 2: Convert to fraction form
    105,213.72/145,192.62 = 57,467.22/x
  3. Step 3: Cross multiply
    105,213.72x = 145,192.62 × 57,467.22
  4. Step 4: Simplify right side
    105,213.72x = 8,343,816,235.92
  5. Step 5: Solve for x
    x = 8,343,816,235.92/105,213.72
  6. Step 6: Final answer
    x = 79,303.50

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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.