Home / 154,328.18-212,960.73-86,339.81

Finding the Fourth Proportional to 154,328.18, 212,960.73 and 86,339.81

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Solution

The fourth proportional to 154,328.18, 212,960.73 and 86,339.81 is: 119,142.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,328.18 : 212,960.73 = 86,339.81 : x
  2. Step 2: Convert to fraction form
    154,328.18/212,960.73 = 86,339.81/x
  3. Step 3: Cross multiply
    154,328.18x = 212,960.73 × 86,339.81
  4. Step 4: Simplify right side
    154,328.18x = 18,386,989,821.84
  5. Step 5: Solve for x
    x = 18,386,989,821.84/154,328.18
  6. Step 6: Final answer
    x = 119,142.15

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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.