Home / 156,422.40-233,428.80-128,774.40

Finding the Fourth Proportional to 156,422.40, 233,428.80 and 128,774.40

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Solution

The fourth proportional to 156,422.40, 233,428.80 and 128,774.40 is: 192,169.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,422.40 : 233,428.80 = 128,774.40 : x
  2. Step 2: Convert to fraction form
    156,422.40/233,428.80 = 128,774.40/x
  3. Step 3: Cross multiply
    156,422.40x = 233,428.80 × 128,774.40
  4. Step 4: Simplify right side
    156,422.40x = 30,059,653,662.72
  5. Step 5: Solve for x
    x = 30,059,653,662.72/156,422.40
  6. Step 6: Final answer
    x = 192,169.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.