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Finding the Fourth Proportional to 152,458.37, 210,408.12 and 87,930.12

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Solution

The fourth proportional to 152,458.37, 210,408.12 and 87,930.12 is: 121,352.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,458.37 : 210,408.12 = 87,930.12 : x
  2. Step 2: Convert to fraction form
    152,458.37/210,408.12 = 87,930.12/x
  3. Step 3: Cross multiply
    152,458.37x = 210,408.12 × 87,930.12
  4. Step 4: Simplify right side
    152,458.37x = 18,501,211,240.57
  5. Step 5: Solve for x
    x = 18,501,211,240.57/152,458.37
  6. Step 6: Final answer
    x = 121,352.55

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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.