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Finding the Fourth Proportional to 105,763.50, 145,950.96 and 60,438.60

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Solution

The fourth proportional to 105,763.50, 145,950.96 and 60,438.60 is: 83,403.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,763.50 : 145,950.96 = 60,438.60 : x
  2. Step 2: Convert to fraction form
    105,763.50/145,950.96 = 60,438.60/x
  3. Step 3: Cross multiply
    105,763.50x = 145,950.96 × 60,438.60
  4. Step 4: Simplify right side
    105,763.50x = 8,821,071,691.06
  5. Step 5: Solve for x
    x = 8,821,071,691.06/105,763.50
  6. Step 6: Final answer
    x = 83,403.74

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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.