Home / 223,921.42-309,008.53-127,124.40

Finding the Fourth Proportional to 223,921.42, 309,008.53 and 127,124.40

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Solution

The fourth proportional to 223,921.42, 309,008.53 and 127,124.40 is: 175,429.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,921.42 : 309,008.53 = 127,124.40 : x
  2. Step 2: Convert to fraction form
    223,921.42/309,008.53 = 127,124.40/x
  3. Step 3: Cross multiply
    223,921.42x = 309,008.53 × 127,124.40
  4. Step 4: Simplify right side
    223,921.42x = 39,282,521,790.47
  5. Step 5: Solve for x
    x = 39,282,521,790.47/223,921.42
  6. Step 6: Final answer
    x = 175,429.94

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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.