Home / 149,646.56-206,547.71-86,021.33

Finding the Fourth Proportional to 149,646.56, 206,547.71 and 86,021.33

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Solution

The fourth proportional to 149,646.56, 206,547.71 and 86,021.33 is: 118,729.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,646.56 : 206,547.71 = 86,021.33 : x
  2. Step 2: Convert to fraction form
    149,646.56/206,547.71 = 86,021.33/x
  3. Step 3: Cross multiply
    149,646.56x = 206,547.71 × 86,021.33
  4. Step 4: Simplify right side
    149,646.56x = 17,767,507,259.81
  5. Step 5: Solve for x
    x = 17,767,507,259.81/149,646.56
  6. Step 6: Final answer
    x = 118,729.81

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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.