Home / 105,683.45-145,848.75-57,938.81

Finding the Fourth Proportional to 105,683.45, 145,848.75 and 57,938.81

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Solution

The fourth proportional to 105,683.45, 145,848.75 and 57,938.81 is: 79,958.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,683.45 : 145,848.75 = 57,938.81 : x
  2. Step 2: Convert to fraction form
    105,683.45/145,848.75 = 57,938.81/x
  3. Step 3: Cross multiply
    105,683.45x = 145,848.75 × 57,938.81
  4. Step 4: Simplify right side
    105,683.45x = 8,450,303,014.99
  5. Step 5: Solve for x
    x = 8,450,303,014.99/105,683.45
  6. Step 6: Final answer
    x = 79,958.62

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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.