Home / 102,106.85-153,160.34-31,991.63

Finding the Fourth Proportional to 102,106.85, 153,160.34 and 31,991.63

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Solution

The fourth proportional to 102,106.85, 153,160.34 and 31,991.63 is: 47,987.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,106.85 : 153,160.34 = 31,991.63 : x
  2. Step 2: Convert to fraction form
    102,106.85/153,160.34 = 31,991.63/x
  3. Step 3: Cross multiply
    102,106.85x = 153,160.34 × 31,991.63
  4. Step 4: Simplify right side
    102,106.85x = 4,899,848,002.19
  5. Step 5: Solve for x
    x = 4,899,848,002.19/102,106.85
  6. Step 6: Final answer
    x = 47,987.46

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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.