Home / 105,551.47-145,661.25-57,153.93

Finding the Fourth Proportional to 105,551.47, 145,661.25 and 57,153.93

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Solution

The fourth proportional to 105,551.47, 145,661.25 and 57,153.93 is: 78,872.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,551.47 : 145,661.25 = 57,153.93 : x
  2. Step 2: Convert to fraction form
    105,551.47/145,661.25 = 57,153.93/x
  3. Step 3: Cross multiply
    105,551.47x = 145,661.25 × 57,153.93
  4. Step 4: Simplify right side
    105,551.47x = 8,325,112,886.21
  5. Step 5: Solve for x
    x = 8,325,112,886.21/105,551.47
  6. Step 6: Final answer
    x = 78,872.54

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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.