Home / 142,488.04-212,679.74-125,678.56

Finding the Fourth Proportional to 142,488.04, 212,679.74 and 125,678.56

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Solution

The fourth proportional to 142,488.04, 212,679.74 and 125,678.56 is: 187,589.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,488.04 : 212,679.74 = 125,678.56 : x
  2. Step 2: Convert to fraction form
    142,488.04/212,679.74 = 125,678.56/x
  3. Step 3: Cross multiply
    142,488.04x = 212,679.74 × 125,678.56
  4. Step 4: Simplify right side
    142,488.04x = 26,729,283,464.37
  5. Step 5: Solve for x
    x = 26,729,283,464.37/142,488.04
  6. Step 6: Final answer
    x = 187,589.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.