Home / 105,084.42-145,014.98-57,336.80

Finding the Fourth Proportional to 105,084.42, 145,014.98 and 57,336.80

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Solution

The fourth proportional to 105,084.42, 145,014.98 and 57,336.80 is: 79,123.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,084.42 : 145,014.98 = 57,336.80 : x
  2. Step 2: Convert to fraction form
    105,084.42/145,014.98 = 57,336.80/x
  3. Step 3: Cross multiply
    105,084.42x = 145,014.98 × 57,336.80
  4. Step 4: Simplify right side
    105,084.42x = 8,314,694,905.26
  5. Step 5: Solve for x
    x = 8,314,694,905.26/105,084.42
  6. Step 6: Final answer
    x = 79,123.95

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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.