Home / 153,709.19-212,123.96-89,173.56

Finding the Fourth Proportional to 153,709.19, 212,123.96 and 89,173.56

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Solution

The fourth proportional to 153,709.19, 212,123.96 and 89,173.56 is: 123,062.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,709.19 : 212,123.96 = 89,173.56 : x
  2. Step 2: Convert to fraction form
    153,709.19/212,123.96 = 89,173.56/x
  3. Step 3: Cross multiply
    153,709.19x = 212,123.96 × 89,173.56
  4. Step 4: Simplify right side
    153,709.19x = 18,915,848,666.90
  5. Step 5: Solve for x
    x = 18,915,848,666.90/153,709.19
  6. Step 6: Final answer
    x = 123,062.57

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1.5x scale

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.