Home / 100,017.09-149,921.96-47,386.53

Finding the Fourth Proportional to 100,017.09, 149,921.96 and 47,386.53

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Solution

The fourth proportional to 100,017.09, 149,921.96 and 47,386.53 is: 71,030.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,017.09 : 149,921.96 = 47,386.53 : x
  2. Step 2: Convert to fraction form
    100,017.09/149,921.96 = 47,386.53/x
  3. Step 3: Cross multiply
    100,017.09x = 149,921.96 × 47,386.53
  4. Step 4: Simplify right side
    100,017.09x = 7,104,281,218.27
  5. Step 5: Solve for x
    x = 7,104,281,218.27/100,017.09
  6. Step 6: Final answer
    x = 71,030.67

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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.