Home / 121,408,999.20-182,113,498.80-85,058,434.80

Finding the Fourth Proportional to 121,408,999.20, 182,113,498.80 and 85,058,434.80

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Solution

The fourth proportional to 121,408,999.20, 182,113,498.80 and 85,058,434.80 is: 127,587,652.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,408,999.20 : 182,113,498.80 = 85,058,434.80 : x
  2. Step 2: Convert to fraction form
    121,408,999.20/182,113,498.80 = 85,058,434.80/x
  3. Step 3: Cross multiply
    121,408,999.20x = 182,113,498.80 × 85,058,434.80
  4. Step 4: Simplify right side
    121,408,999.20x = 15,490,289,163,879,678
  5. Step 5: Solve for x
    x = 15,490,289,163,879,678/121,408,999.20
  6. Step 6: Final answer
    x = 127,587,652.20

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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.