Home / 258,547.06-387,825.39-81,050.10

Finding the Fourth Proportional to 258,547.06, 387,825.39 and 81,050.10

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Solution

The fourth proportional to 258,547.06, 387,825.39 and 81,050.10 is: 121,576.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,547.06 : 387,825.39 = 81,050.10 : x
  2. Step 2: Convert to fraction form
    258,547.06/387,825.39 = 81,050.10/x
  3. Step 3: Cross multiply
    258,547.06x = 387,825.39 × 81,050.10
  4. Step 4: Simplify right side
    258,547.06x = 31,433,286,642.04
  5. Step 5: Solve for x
    x = 31,433,286,642.04/258,547.06
  6. Step 6: Final answer
    x = 121,576.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.