Home / 100,070.06-138,093.63-59,774.72

Finding the Fourth Proportional to 100,070.06, 138,093.63 and 59,774.72

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Solution

The fourth proportional to 100,070.06, 138,093.63 and 59,774.72 is: 82,487.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,070.06 : 138,093.63 = 59,774.72 : x
  2. Step 2: Convert to fraction form
    100,070.06/138,093.63 = 59,774.72/x
  3. Step 3: Cross multiply
    100,070.06x = 138,093.63 × 59,774.72
  4. Step 4: Simplify right side
    100,070.06x = 8,254,508,067.03
  5. Step 5: Solve for x
    x = 8,254,508,067.03/100,070.06
  6. Step 6: Final answer
    x = 82,487.29

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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.