Home / 90,843,821.40-136,265,732.10-83,828,800.20

Finding the Fourth Proportional to 90,843,821.40, 136,265,732.10 and 83,828,800.20

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Solution

The fourth proportional to 90,843,821.40, 136,265,732.10 and 83,828,800.20 is: 125,743,200.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,843,821.40 : 136,265,732.10 = 83,828,800.20 : x
  2. Step 2: Convert to fraction form
    90,843,821.40/136,265,732.10 = 83,828,800.20/x
  3. Step 3: Cross multiply
    90,843,821.40x = 136,265,732.10 × 83,828,800.20
  4. Step 4: Simplify right side
    90,843,821.40x = 11,422,992,830,317,626
  5. Step 5: Solve for x
    x = 11,422,992,830,317,626/90,843,821.40
  6. Step 6: Final answer
    x = 125,743,200.30

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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.