Home / 153,560.21-211,920.30-89,918.51

Finding the Fourth Proportional to 153,560.21, 211,920.30 and 89,918.51

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Solution

The fourth proportional to 153,560.21, 211,920.30 and 89,918.51 is: 124,091.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,560.21 : 211,920.30 = 89,918.51 : x
  2. Step 2: Convert to fraction form
    153,560.21/211,920.30 = 89,918.51/x
  3. Step 3: Cross multiply
    153,560.21x = 211,920.30 × 89,918.51
  4. Step 4: Simplify right side
    153,560.21x = 19,055,556,555.15
  5. Step 5: Solve for x
    x = 19,055,556,555.15/153,560.21
  6. Step 6: Final answer
    x = 124,091.76

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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.