Home / 154,424.45-213,095.40-86,429.81

Finding the Fourth Proportional to 154,424.45, 213,095.40 and 86,429.81

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Solution

The fourth proportional to 154,424.45, 213,095.40 and 86,429.81 is: 119,267.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,424.45 : 213,095.40 = 86,429.81 : x
  2. Step 2: Convert to fraction form
    154,424.45/213,095.40 = 86,429.81/x
  3. Step 3: Cross multiply
    154,424.45x = 213,095.40 × 86,429.81
  4. Step 4: Simplify right side
    154,424.45x = 18,417,794,933.87
  5. Step 5: Solve for x
    x = 18,417,794,933.87/154,424.45
  6. Step 6: Final answer
    x = 119,267.35

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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.