Home / 142,421.64-213,646.92-53,749.68

Finding the Fourth Proportional to 142,421.64, 213,646.92 and 53,749.68

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Solution

The fourth proportional to 142,421.64, 213,646.92 and 53,749.68 is: 80,629.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,421.64 : 213,646.92 = 53,749.68 : x
  2. Step 2: Convert to fraction form
    142,421.64/213,646.92 = 53,749.68/x
  3. Step 3: Cross multiply
    142,421.64x = 213,646.92 × 53,749.68
  4. Step 4: Simplify right side
    142,421.64x = 11,483,453,582.99
  5. Step 5: Solve for x
    x = 11,483,453,582.99/142,421.64
  6. Step 6: Final answer
    x = 80,629.98

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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.