Home / 152,218.74-228,260.61-81,128.13

Finding the Fourth Proportional to 152,218.74, 228,260.61 and 81,128.13

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Solution

The fourth proportional to 152,218.74, 228,260.61 and 81,128.13 is: 121,656.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,218.74 : 228,260.61 = 81,128.13 : x
  2. Step 2: Convert to fraction form
    152,218.74/228,260.61 = 81,128.13/x
  3. Step 3: Cross multiply
    152,218.74x = 228,260.61 × 81,128.13
  4. Step 4: Simplify right side
    152,218.74x = 18,518,356,441.96
  5. Step 5: Solve for x
    x = 18,518,356,441.96/152,218.74
  6. Step 6: Final answer
    x = 121,656.22

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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.