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Finding the Fourth Proportional to 103,886.80, 143,329.40 and 58,559.20

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Solution

The fourth proportional to 103,886.80, 143,329.40 and 58,559.20 is: 80,792.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,886.80 : 143,329.40 = 58,559.20 : x
  2. Step 2: Convert to fraction form
    103,886.80/143,329.40 = 58,559.20/x
  3. Step 3: Cross multiply
    103,886.80x = 143,329.40 × 58,559.20
  4. Step 4: Simplify right side
    103,886.80x = 8,393,255,000.48
  5. Step 5: Solve for x
    x = 8,393,255,000.48/103,886.80
  6. Step 6: Final answer
    x = 80,792.31

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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.