Home / 142,110.16-212,771.40-71,842.60

Finding the Fourth Proportional to 142,110.16, 212,771.40 and 71,842.60

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Solution

The fourth proportional to 142,110.16, 212,771.40 and 71,842.60 is: 107,564.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,110.16 : 212,771.40 = 71,842.60 : x
  2. Step 2: Convert to fraction form
    142,110.16/212,771.40 = 71,842.60/x
  3. Step 3: Cross multiply
    142,110.16x = 212,771.40 × 71,842.60
  4. Step 4: Simplify right side
    142,110.16x = 15,286,050,581.64
  5. Step 5: Solve for x
    x = 15,286,050,581.64/142,110.16
  6. Step 6: Final answer
    x = 107,564.80

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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.