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Finding the Fourth Proportional to 103,641.60, 143,025.40 and 58,929.60

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Solution

The fourth proportional to 103,641.60, 143,025.40 and 58,929.60 is: 81,322.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,641.60 : 143,025.40 = 58,929.60 : x
  2. Step 2: Convert to fraction form
    103,641.60/143,025.40 = 58,929.60/x
  3. Step 3: Cross multiply
    103,641.60x = 143,025.40 × 58,929.60
  4. Step 4: Simplify right side
    103,641.60x = 8,428,429,611.84
  5. Step 5: Solve for x
    x = 8,428,429,611.84/103,641.60
  6. Step 6: Final answer
    x = 81,322.84

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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.