Home / 105,537.22-145,639.98-57,790.63

Finding the Fourth Proportional to 105,537.22, 145,639.98 and 57,790.63

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Solution

The fourth proportional to 105,537.22, 145,639.98 and 57,790.63 is: 79,750.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,537.22 : 145,639.98 = 57,790.63 : x
  2. Step 2: Convert to fraction form
    105,537.22/145,639.98 = 57,790.63/x
  3. Step 3: Cross multiply
    105,537.22x = 145,639.98 × 57,790.63
  4. Step 4: Simplify right side
    105,537.22x = 8,416,626,197.39
  5. Step 5: Solve for x
    x = 8,416,626,197.39/105,537.22
  6. Step 6: Final answer
    x = 79,750.31

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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.