Home / 141,837.80-212,756.70-128,013.80

Finding the Fourth Proportional to 141,837.80, 212,756.70 and 128,013.80

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Solution

The fourth proportional to 141,837.80, 212,756.70 and 128,013.80 is: 192,020.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,837.80 : 212,756.70 = 128,013.80 : x
  2. Step 2: Convert to fraction form
    141,837.80/212,756.70 = 128,013.80/x
  3. Step 3: Cross multiply
    141,837.80x = 212,756.70 × 128,013.80
  4. Step 4: Simplify right side
    141,837.80x = 27,235,793,642.46
  5. Step 5: Solve for x
    x = 27,235,793,642.46/141,837.80
  6. Step 6: Final answer
    x = 192,020.70

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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.