Home / 154,547,640.80-231,821,461.20-138,423,327.20

Finding the Fourth Proportional to 154,547,640.80, 231,821,461.20 and 138,423,327.20

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Solution

The fourth proportional to 154,547,640.80, 231,821,461.20 and 138,423,327.20 is: 207,634,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,547,640.80 : 231,821,461.20 = 138,423,327.20 : x
  2. Step 2: Convert to fraction form
    154,547,640.80/231,821,461.20 = 138,423,327.20/x
  3. Step 3: Cross multiply
    154,547,640.80x = 231,821,461.20 × 138,423,327.20
  4. Step 4: Simplify right side
    154,547,640.80x = 32,089,497,975,669,700
  5. Step 5: Solve for x
    x = 32,089,497,975,669,700/154,547,640.80
  6. Step 6: Final answer
    x = 207,634,990.80

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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.