Home / 157,272.47-235,739.01-77,217.33

Finding the Fourth Proportional to 157,272.47, 235,739.01 and 77,217.33

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Solution

The fourth proportional to 157,272.47, 235,739.01 and 77,217.33 is: 115,742.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,272.47 : 235,739.01 = 77,217.33 : x
  2. Step 2: Convert to fraction form
    157,272.47/235,739.01 = 77,217.33/x
  3. Step 3: Cross multiply
    157,272.47x = 235,739.01 × 77,217.33
  4. Step 4: Simplify right side
    157,272.47x = 18,203,136,929.04
  5. Step 5: Solve for x
    x = 18,203,136,929.04/157,272.47
  6. Step 6: Final answer
    x = 115,742.68

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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.