Home / 212,901.19-319,178.58-79,706.83

Finding the Fourth Proportional to 212,901.19, 319,178.58 and 79,706.83

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Solution

The fourth proportional to 212,901.19, 319,178.58 and 79,706.83 is: 119,495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,901.19 : 319,178.58 = 79,706.83 : x
  2. Step 2: Convert to fraction form
    212,901.19/319,178.58 = 79,706.83/x
  3. Step 3: Cross multiply
    212,901.19x = 319,178.58 × 79,706.83
  4. Step 4: Simplify right side
    212,901.19x = 25,440,712,815.70
  5. Step 5: Solve for x
    x = 25,440,712,815.70/212,901.19
  6. Step 6: Final answer
    x = 119,495.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.