Home / 115,038.75-158,751.98-66,647.28

Finding the Fourth Proportional to 115,038.75, 158,751.98 and 66,647.28

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Solution

The fourth proportional to 115,038.75, 158,751.98 and 66,647.28 is: 91,972.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,038.75 : 158,751.98 = 66,647.28 : x
  2. Step 2: Convert to fraction form
    115,038.75/158,751.98 = 66,647.28/x
  3. Step 3: Cross multiply
    115,038.75x = 158,751.98 × 66,647.28
  4. Step 4: Simplify right side
    115,038.75x = 10,580,387,328.38
  5. Step 5: Solve for x
    x = 10,580,387,328.38/115,038.75
  6. Step 6: Final answer
    x = 91,972.38

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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.