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Finding the Fourth Proportional to 112,657.51, 155,467.50 and 70,216

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Solution

The fourth proportional to 112,657.51, 155,467.50 and 70,216 is: 96,898.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,657.51 : 155,467.50 = 70,216 : x
  2. Step 2: Convert to fraction form
    112,657.51/155,467.50 = 70,216/x
  3. Step 3: Cross multiply
    112,657.51x = 155,467.50 × 70,216
  4. Step 4: Simplify right side
    112,657.51x = 10,916,305,980
  5. Step 5: Solve for x
    x = 10,916,305,980/112,657.51
  6. Step 6: Final answer
    x = 96,898.16

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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.