Home / 74,148.39-102,323.51-40,156.60

Finding the Fourth Proportional to 74,148.39, 102,323.51 and 40,156.60

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Solution

The fourth proportional to 74,148.39, 102,323.51 and 40,156.60 is: 55,415.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,148.39 : 102,323.51 = 40,156.60 : x
  2. Step 2: Convert to fraction form
    74,148.39/102,323.51 = 40,156.60/x
  3. Step 3: Cross multiply
    74,148.39x = 102,323.51 × 40,156.60
  4. Step 4: Simplify right side
    74,148.39x = 4,108,964,261.67
  5. Step 5: Solve for x
    x = 4,108,964,261.67/74,148.39
  6. Step 6: Final answer
    x = 55,415.42

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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.