Home / 223,617.76-308,586.98-128,118.31

Finding the Fourth Proportional to 223,617.76, 308,586.98 and 128,118.31

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Solution

The fourth proportional to 223,617.76, 308,586.98 and 128,118.31 is: 176,800.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,617.76 : 308,586.98 = 128,118.31 : x
  2. Step 2: Convert to fraction form
    223,617.76/308,586.98 = 128,118.31/x
  3. Step 3: Cross multiply
    223,617.76x = 308,586.98 × 128,118.31
  4. Step 4: Simplify right side
    223,617.76x = 39,535,641,914.43
  5. Step 5: Solve for x
    x = 39,535,641,914.43/223,617.76
  6. Step 6: Final answer
    x = 176,800.10

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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.