Home / 122,172.24-168,598.28-79,705.68

Finding the Fourth Proportional to 122,172.24, 168,598.28 and 79,705.68

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Solution

The fourth proportional to 122,172.24, 168,598.28 and 79,705.68 is: 109,994.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,172.24 : 168,598.28 = 79,705.68 : x
  2. Step 2: Convert to fraction form
    122,172.24/168,598.28 = 79,705.68/x
  3. Step 3: Cross multiply
    122,172.24x = 168,598.28 × 79,705.68
  4. Step 4: Simplify right side
    122,172.24x = 13,438,240,554.23
  5. Step 5: Solve for x
    x = 13,438,240,554.23/122,172.24
  6. Step 6: Final answer
    x = 109,994.22

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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.