Home / 105,394.21-145,445.16-56,997.06

Finding the Fourth Proportional to 105,394.21, 145,445.16 and 56,997.06

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Solution

The fourth proportional to 105,394.21, 145,445.16 and 56,997.06 is: 78,656.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,394.21 : 145,445.16 = 56,997.06 : x
  2. Step 2: Convert to fraction form
    105,394.21/145,445.16 = 56,997.06/x
  3. Step 3: Cross multiply
    105,394.21x = 145,445.16 × 56,997.06
  4. Step 4: Simplify right side
    105,394.21x = 8,289,947,383.16
  5. Step 5: Solve for x
    x = 8,289,947,383.16/105,394.21
  6. Step 6: Final answer
    x = 78,656.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.