Home / 120,054.36-180,081.54-31,307.70

Finding the Fourth Proportional to 120,054.36, 180,081.54 and 31,307.70

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Solution

The fourth proportional to 120,054.36, 180,081.54 and 31,307.70 is: 46,961.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,054.36 : 180,081.54 = 31,307.70 : x
  2. Step 2: Convert to fraction form
    120,054.36/180,081.54 = 31,307.70/x
  3. Step 3: Cross multiply
    120,054.36x = 180,081.54 × 31,307.70
  4. Step 4: Simplify right side
    120,054.36x = 5,637,938,829.86
  5. Step 5: Solve for x
    x = 5,637,938,829.86/120,054.36
  6. Step 6: Final answer
    x = 46,961.55

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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.