Home / 105,111.80-157,667.70-42,750.20

Finding the Fourth Proportional to 105,111.80, 157,667.70 and 42,750.20

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Solution

The fourth proportional to 105,111.80, 157,667.70 and 42,750.20 is: 64,125.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,111.80 : 157,667.70 = 42,750.20 : x
  2. Step 2: Convert to fraction form
    105,111.80/157,667.70 = 42,750.20/x
  3. Step 3: Cross multiply
    105,111.80x = 157,667.70 × 42,750.20
  4. Step 4: Simplify right side
    105,111.80x = 6,740,325,708.54
  5. Step 5: Solve for x
    x = 6,740,325,708.54/105,111.80
  6. Step 6: Final answer
    x = 64,125.30

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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.