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Finding the Fourth Proportional to 156,458.16, 215,911.08 and 84,837.96

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Solution

The fourth proportional to 156,458.16, 215,911.08 and 84,837.96 is: 117,075.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,458.16 : 215,911.08 = 84,837.96 : x
  2. Step 2: Convert to fraction form
    156,458.16/215,911.08 = 84,837.96/x
  3. Step 3: Cross multiply
    156,458.16x = 215,911.08 × 84,837.96
  4. Step 4: Simplify right side
    156,458.16x = 18,317,455,568.60
  5. Step 5: Solve for x
    x = 18,317,455,568.60/156,458.16
  6. Step 6: Final answer
    x = 117,075.74

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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.