Home / 105,072.26-145,000.20-57,326.60

Finding the Fourth Proportional to 105,072.26, 145,000.20 and 57,326.60

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Solution

The fourth proportional to 105,072.26, 145,000.20 and 57,326.60 is: 79,110.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,072.26 : 145,000.20 = 57,326.60 : x
  2. Step 2: Convert to fraction form
    105,072.26/145,000.20 = 57,326.60/x
  3. Step 3: Cross multiply
    105,072.26x = 145,000.20 × 57,326.60
  4. Step 4: Simplify right side
    105,072.26x = 8,312,368,465.32
  5. Step 5: Solve for x
    x = 8,312,368,465.32/105,072.26
  6. Step 6: Final answer
    x = 79,110.97

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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.