Home / 74,146.39-102,320.75-40,154.60

Finding the Fourth Proportional to 74,146.39, 102,320.75 and 40,154.60

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Solution

The fourth proportional to 74,146.39, 102,320.75 and 40,154.60 is: 55,412.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,146.39 : 102,320.75 = 40,154.60 : x
  2. Step 2: Convert to fraction form
    74,146.39/102,320.75 = 40,154.60/x
  3. Step 3: Cross multiply
    74,146.39x = 102,320.75 × 40,154.60
  4. Step 4: Simplify right side
    74,146.39x = 4,108,648,627.77
  5. Step 5: Solve for x
    x = 4,108,648,627.77/74,146.39
  6. Step 6: Final answer
    x = 55,412.66

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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.