Home / 101,545.21-140,071.32-74,756.89

Finding the Fourth Proportional to 101,545.21, 140,071.32 and 74,756.89

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Solution

The fourth proportional to 101,545.21, 140,071.32 and 74,756.89 is: 103,119.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,545.21 : 140,071.32 = 74,756.89 : x
  2. Step 2: Convert to fraction form
    101,545.21/140,071.32 = 74,756.89/x
  3. Step 3: Cross multiply
    101,545.21x = 140,071.32 × 74,756.89
  4. Step 4: Simplify right side
    101,545.21x = 10,471,296,261.39
  5. Step 5: Solve for x
    x = 10,471,296,261.39/101,545.21
  6. Step 6: Final answer
    x = 103,119.55

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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.