Home / 152,007.20-228,010.80-128,387.60

Finding the Fourth Proportional to 152,007.20, 228,010.80 and 128,387.60

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Solution

The fourth proportional to 152,007.20, 228,010.80 and 128,387.60 is: 192,581.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,007.20 : 228,010.80 = 128,387.60 : x
  2. Step 2: Convert to fraction form
    152,007.20/228,010.80 = 128,387.60/x
  3. Step 3: Cross multiply
    152,007.20x = 228,010.80 × 128,387.60
  4. Step 4: Simplify right side
    152,007.20x = 29,273,759,386.08
  5. Step 5: Solve for x
    x = 29,273,759,386.08/152,007.20
  6. Step 6: Final answer
    x = 192,581.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.