Home / 145,208.15-200,391.72-81,547.31

Finding the Fourth Proportional to 145,208.15, 200,391.72 and 81,547.31

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Solution

The fourth proportional to 145,208.15, 200,391.72 and 81,547.31 is: 112,537.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,208.15 : 200,391.72 = 81,547.31 : x
  2. Step 2: Convert to fraction form
    145,208.15/200,391.72 = 81,547.31/x
  3. Step 3: Cross multiply
    145,208.15x = 200,391.72 × 81,547.31
  4. Step 4: Simplify right side
    145,208.15x = 16,341,404,710.31
  5. Step 5: Solve for x
    x = 16,341,404,710.31/145,208.15
  6. Step 6: Final answer
    x = 112,537.80

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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.