Home / 105,430.20-145,493.58-57,683.73

Finding the Fourth Proportional to 105,430.20, 145,493.58 and 57,683.73

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Solution

The fourth proportional to 105,430.20, 145,493.58 and 57,683.73 is: 79,603.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,430.20 : 145,493.58 = 57,683.73 : x
  2. Step 2: Convert to fraction form
    105,430.20/145,493.58 = 57,683.73/x
  3. Step 3: Cross multiply
    105,430.20x = 145,493.58 × 57,683.73
  4. Step 4: Simplify right side
    105,430.20x = 8,392,612,385.45
  5. Step 5: Solve for x
    x = 8,392,612,385.45/105,430.20
  6. Step 6: Final answer
    x = 79,603.49

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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.