Home / 154,320.05-212,953.05-86,323.89

Finding the Fourth Proportional to 154,320.05, 212,953.05 and 86,323.89

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Solution

The fourth proportional to 154,320.05, 212,953.05 and 86,323.89 is: 119,122.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,320.05 : 212,953.05 = 86,323.89 : x
  2. Step 2: Convert to fraction form
    154,320.05/212,953.05 = 86,323.89/x
  3. Step 3: Cross multiply
    154,320.05x = 212,953.05 × 86,323.89
  4. Step 4: Simplify right side
    154,320.05x = 18,382,936,461.94
  5. Step 5: Solve for x
    x = 18,382,936,461.94/154,320.05
  6. Step 6: Final answer
    x = 119,122.15

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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.