Home / 142,207.40-213,287.74-47,438.31

Finding the Fourth Proportional to 142,207.40, 213,287.74 and 47,438.31

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Solution

The fourth proportional to 142,207.40, 213,287.74 and 47,438.31 is: 71,149.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,207.40 : 213,287.74 = 47,438.31 : x
  2. Step 2: Convert to fraction form
    142,207.40/213,287.74 = 47,438.31/x
  3. Step 3: Cross multiply
    142,207.40x = 213,287.74 × 47,438.31
  4. Step 4: Simplify right side
    142,207.40x = 10,118,009,744.36
  5. Step 5: Solve for x
    x = 10,118,009,744.36/142,207.40
  6. Step 6: Final answer
    x = 71,149.67

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1.5x scale

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.