Home / 105,558.54-145,670.88-57,160.32

Finding the Fourth Proportional to 105,558.54, 145,670.88 and 57,160.32

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Solution

The fourth proportional to 105,558.54, 145,670.88 and 57,160.32 is: 78,881.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,558.54 : 145,670.88 = 57,160.32 : x
  2. Step 2: Convert to fraction form
    105,558.54/145,670.88 = 57,160.32/x
  3. Step 3: Cross multiply
    105,558.54x = 145,670.88 × 57,160.32
  4. Step 4: Simplify right side
    105,558.54x = 8,326,594,115.48
  5. Step 5: Solve for x
    x = 8,326,594,115.48/105,558.54
  6. Step 6: Final answer
    x = 78,881.29

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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.