Home / 105,265.90-145,265.20-57,518.22

Finding the Fourth Proportional to 105,265.90, 145,265.20 and 57,518.22

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Solution

The fourth proportional to 105,265.90, 145,265.20 and 57,518.22 is: 79,374.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,265.90 : 145,265.20 = 57,518.22 : x
  2. Step 2: Convert to fraction form
    105,265.90/145,265.20 = 57,518.22/x
  3. Step 3: Cross multiply
    105,265.90x = 145,265.20 × 57,518.22
  4. Step 4: Simplify right side
    105,265.90x = 8,355,395,731.94
  5. Step 5: Solve for x
    x = 8,355,395,731.94/105,265.90
  6. Step 6: Final answer
    x = 79,374.19

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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.