Home / 105,258.90-145,255.57-57,511.23

Finding the Fourth Proportional to 105,258.90, 145,255.57 and 57,511.23

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Solution

The fourth proportional to 105,258.90, 145,255.57 and 57,511.23 is: 79,364.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,258.90 : 145,255.57 = 57,511.23 : x
  2. Step 2: Convert to fraction form
    105,258.90/145,255.57 = 57,511.23/x
  3. Step 3: Cross multiply
    105,258.90x = 145,255.57 × 57,511.23
  4. Step 4: Simplify right side
    105,258.90x = 8,353,826,495.05
  5. Step 5: Solve for x
    x = 8,353,826,495.05/105,258.90
  6. Step 6: Final answer
    x = 79,364.56

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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.