Home / 103,103.75-142,283.18-58,391.75

Finding the Fourth Proportional to 103,103.75, 142,283.18 and 58,391.75

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Solution

The fourth proportional to 103,103.75, 142,283.18 and 58,391.75 is: 80,580.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,103.75 : 142,283.18 = 58,391.75 : x
  2. Step 2: Convert to fraction form
    103,103.75/142,283.18 = 58,391.75/x
  3. Step 3: Cross multiply
    103,103.75x = 142,283.18 × 58,391.75
  4. Step 4: Simplify right side
    103,103.75x = 8,308,163,875.77
  5. Step 5: Solve for x
    x = 8,308,163,875.77/103,103.75
  6. Step 6: Final answer
    x = 80,580.62

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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.