Home / 100,482.51-138,637.45-64,693.25

Finding the Fourth Proportional to 100,482.51, 138,637.45 and 64,693.25

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Solution

The fourth proportional to 100,482.51, 138,637.45 and 64,693.25 is: 89,258.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,482.51 : 138,637.45 = 64,693.25 : x
  2. Step 2: Convert to fraction form
    100,482.51/138,637.45 = 64,693.25/x
  3. Step 3: Cross multiply
    100,482.51x = 138,637.45 × 64,693.25
  4. Step 4: Simplify right side
    100,482.51x = 8,968,907,212.21
  5. Step 5: Solve for x
    x = 8,968,907,212.21/100,482.51
  6. Step 6: Final answer
    x = 89,258.39

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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.