Home / 143,653,546.80-215,480,320.20-86,257,918.80

Finding the Fourth Proportional to 143,653,546.80, 215,480,320.20 and 86,257,918.80

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Solution

The fourth proportional to 143,653,546.80, 215,480,320.20 and 86,257,918.80 is: 129,386,878.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,653,546.80 : 215,480,320.20 = 86,257,918.80 : x
  2. Step 2: Convert to fraction form
    143,653,546.80/215,480,320.20 = 86,257,918.80/x
  3. Step 3: Cross multiply
    143,653,546.80x = 215,480,320.20 × 86,257,918.80
  4. Step 4: Simplify right side
    143,653,546.80x = 18,586,883,962,809,600
  5. Step 5: Solve for x
    x = 18,586,883,962,809,600/143,653,546.80
  6. Step 6: Final answer
    x = 129,386,878.20

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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.