Home / 154,837.92-213,678.60-86,869.92

Finding the Fourth Proportional to 154,837.92, 213,678.60 and 86,869.92

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Solution

The fourth proportional to 154,837.92, 213,678.60 and 86,869.92 is: 119,881.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,837.92 : 213,678.60 = 86,869.92 : x
  2. Step 2: Convert to fraction form
    154,837.92/213,678.60 = 86,869.92/x
  3. Step 3: Cross multiply
    154,837.92x = 213,678.60 × 86,869.92
  4. Step 4: Simplify right side
    154,837.92x = 18,562,242,887.71
  5. Step 5: Solve for x
    x = 18,562,242,887.71/154,837.92
  6. Step 6: Final answer
    x = 119,881.76

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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.