Home / 223,999.04-309,125.04-128,522.72

Finding the Fourth Proportional to 223,999.04, 309,125.04 and 128,522.72

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Solution

The fourth proportional to 223,999.04, 309,125.04 and 128,522.72 is: 177,365.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,999.04 : 309,125.04 = 128,522.72 : x
  2. Step 2: Convert to fraction form
    223,999.04/309,125.04 = 128,522.72/x
  3. Step 3: Cross multiply
    223,999.04x = 309,125.04 × 128,522.72
  4. Step 4: Simplify right side
    223,999.04x = 39,729,590,960.91
  5. Step 5: Solve for x
    x = 39,729,590,960.91/223,999.04
  6. Step 6: Final answer
    x = 177,365.01

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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.