Home / 120,371,656.91-180,298,058.30-81,295,231.89

Finding the Fourth Proportional to 120,371,656.91, 180,298,058.30 and 81,295,231.89

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Solution

The fourth proportional to 120,371,656.91, 180,298,058.30 and 81,295,231.89 is: 121,767,638.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,371,656.91 : 180,298,058.30 = 81,295,231.89 : x
  2. Step 2: Convert to fraction form
    120,371,656.91/180,298,058.30 = 81,295,231.89/x
  3. Step 3: Cross multiply
    120,371,656.91x = 180,298,058.30 × 81,295,231.89
  4. Step 4: Simplify right side
    120,371,656.91x = 14,657,372,458,832,440
  5. Step 5: Solve for x
    x = 14,657,372,458,832,440/120,371,656.91
  6. Step 6: Final answer
    x = 121,767,638.95

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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.