Home / 128,017.40-191,943.86-53,189.24

Finding the Fourth Proportional to 128,017.40, 191,943.86 and 53,189.24

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Solution

The fourth proportional to 128,017.40, 191,943.86 and 53,189.24 is: 79,749.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,017.40 : 191,943.86 = 53,189.24 : x
  2. Step 2: Convert to fraction form
    128,017.40/191,943.86 = 53,189.24/x
  3. Step 3: Cross multiply
    128,017.40x = 191,943.86 × 53,189.24
  4. Step 4: Simplify right side
    128,017.40x = 10,209,348,036.07
  5. Step 5: Solve for x
    x = 10,209,348,036.07/128,017.40
  6. Step 6: Final answer
    x = 79,749.69

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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.