Home / 145,617,820.20-218,426,730.30-91,198,261.80

Finding the Fourth Proportional to 145,617,820.20, 218,426,730.30 and 91,198,261.80

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Solution

The fourth proportional to 145,617,820.20, 218,426,730.30 and 91,198,261.80 is: 136,797,392.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,617,820.20 : 218,426,730.30 = 91,198,261.80 : x
  2. Step 2: Convert to fraction form
    145,617,820.20/218,426,730.30 = 91,198,261.80/x
  3. Step 3: Cross multiply
    145,617,820.20x = 218,426,730.30 × 91,198,261.80
  4. Step 4: Simplify right side
    145,617,820.20x = 19,920,138,134,017,392
  5. Step 5: Solve for x
    x = 19,920,138,134,017,392/145,617,820.20
  6. Step 6: Final answer
    x = 136,797,392.70

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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.