Home / 145,578,729.60-218,084,659.20-80,766,547.20

Finding the Fourth Proportional to 145,578,729.60, 218,084,659.20 and 80,766,547.20

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Solution

The fourth proportional to 145,578,729.60, 218,084,659.20 and 80,766,547.20 is: 120,992,571.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,578,729.60 : 218,084,659.20 = 80,766,547.20 : x
  2. Step 2: Convert to fraction form
    145,578,729.60/218,084,659.20 = 80,766,547.20/x
  3. Step 3: Cross multiply
    145,578,729.60x = 218,084,659.20 × 80,766,547.20
  4. Step 4: Simplify right side
    145,578,729.60x = 17,613,944,920,872,714
  5. Step 5: Solve for x
    x = 17,613,944,920,872,714/145,578,729.60
  6. Step 6: Final answer
    x = 120,992,571.99

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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.