Home / 115,157,231.40-172,315,943.10-84,924,143.40

Finding the Fourth Proportional to 115,157,231.40, 172,315,943.10 and 84,924,143.40

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Solution

The fourth proportional to 115,157,231.40, 172,315,943.10 and 84,924,143.40 is: 127,076,551.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,157,231.40 : 172,315,943.10 = 84,924,143.40 : x
  2. Step 2: Convert to fraction form
    115,157,231.40/172,315,943.10 = 84,924,143.40/x
  3. Step 3: Cross multiply
    115,157,231.40x = 172,315,943.10 × 84,924,143.40
  4. Step 4: Simplify right side
    115,157,231.40x = 14,633,783,861,930,642
  5. Step 5: Solve for x
    x = 14,633,783,861,930,642/115,157,231.40
  6. Step 6: Final answer
    x = 127,076,551.63

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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.