Home / 86,143.32-118,888.43-52,153.09

Finding the Fourth Proportional to 86,143.32, 118,888.43 and 52,153.09

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Solution

The fourth proportional to 86,143.32, 118,888.43 and 52,153.09 is: 71,977.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,143.32 : 118,888.43 = 52,153.09 : x
  2. Step 2: Convert to fraction form
    86,143.32/118,888.43 = 52,153.09/x
  3. Step 3: Cross multiply
    86,143.32x = 118,888.43 × 52,153.09
  4. Step 4: Simplify right side
    86,143.32x = 6,200,398,431.76
  5. Step 5: Solve for x
    x = 6,200,398,431.76/86,143.32
  6. Step 6: Final answer
    x = 71,977.70

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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.