Home / 102,806.06-154,130.95-71,131.92

Finding the Fourth Proportional to 102,806.06, 154,130.95 and 71,131.92

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Solution

The fourth proportional to 102,806.06, 154,130.95 and 71,131.92 is: 106,643.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,806.06 : 154,130.95 = 71,131.92 : x
  2. Step 2: Convert to fraction form
    102,806.06/154,130.95 = 71,131.92/x
  3. Step 3: Cross multiply
    102,806.06x = 154,130.95 × 71,131.92
  4. Step 4: Simplify right side
    102,806.06x = 10,963,630,782.83
  5. Step 5: Solve for x
    x = 10,963,630,782.83/102,806.06
  6. Step 6: Final answer
    x = 106,643.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.