Home / 157,890.86-217,890.17-86,271.06

Finding the Fourth Proportional to 157,890.86, 217,890.17 and 86,271.06

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Solution

The fourth proportional to 157,890.86, 217,890.17 and 86,271.06 is: 119,054.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,890.86 : 217,890.17 = 86,271.06 : x
  2. Step 2: Convert to fraction form
    157,890.86/217,890.17 = 86,271.06/x
  3. Step 3: Cross multiply
    157,890.86x = 217,890.17 × 86,271.06
  4. Step 4: Simplify right side
    157,890.86x = 18,797,615,929.48
  5. Step 5: Solve for x
    x = 18,797,615,929.48/157,890.86
  6. Step 6: Final answer
    x = 119,054.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.