Home / 223,586.10-308,592.63-128,156.70

Finding the Fourth Proportional to 223,586.10, 308,592.63 and 128,156.70

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Solution

The fourth proportional to 223,586.10, 308,592.63 and 128,156.70 is: 176,881.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,586.10 : 308,592.63 = 128,156.70 : x
  2. Step 2: Convert to fraction form
    223,586.10/308,592.63 = 128,156.70/x
  3. Step 3: Cross multiply
    223,586.10x = 308,592.63 × 128,156.70
  4. Step 4: Simplify right side
    223,586.10x = 39,548,213,105.12
  5. Step 5: Solve for x
    x = 39,548,213,105.12/223,586.10
  6. Step 6: Final answer
    x = 176,881.36

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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.