Home / 292,074.76-438,185.04-81,711.12

Finding the Fourth Proportional to 292,074.76, 438,185.04 and 81,711.12

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Solution

The fourth proportional to 292,074.76, 438,185.04 and 81,711.12 is: 122,587.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,074.76 : 438,185.04 = 81,711.12 : x
  2. Step 2: Convert to fraction form
    292,074.76/438,185.04 = 81,711.12/x
  3. Step 3: Cross multiply
    292,074.76x = 438,185.04 × 81,711.12
  4. Step 4: Simplify right side
    292,074.76x = 35,804,590,385.64
  5. Step 5: Solve for x
    x = 35,804,590,385.64/292,074.76
  6. Step 6: Final answer
    x = 122,587.07

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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.