Home / 105,228.98-145,219.18-57,485.41

Finding the Fourth Proportional to 105,228.98, 145,219.18 and 57,485.41

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Solution

The fourth proportional to 105,228.98, 145,219.18 and 57,485.41 is: 79,331.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,228.98 : 145,219.18 = 57,485.41 : x
  2. Step 2: Convert to fraction form
    105,228.98/145,219.18 = 57,485.41/x
  3. Step 3: Cross multiply
    105,228.98x = 145,219.18 × 57,485.41
  4. Step 4: Simplify right side
    105,228.98x = 8,347,983,595.40
  5. Step 5: Solve for x
    x = 8,347,983,595.40/105,228.98
  6. Step 6: Final answer
    x = 79,331.60

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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.