Home / 102,139.70-153,208.08-45,939.94

Finding the Fourth Proportional to 102,139.70, 153,208.08 and 45,939.94

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Solution

The fourth proportional to 102,139.70, 153,208.08 and 45,939.94 is: 68,909.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,139.70 : 153,208.08 = 45,939.94 : x
  2. Step 2: Convert to fraction form
    102,139.70/153,208.08 = 45,939.94/x
  3. Step 3: Cross multiply
    102,139.70x = 153,208.08 × 45,939.94
  4. Step 4: Simplify right side
    102,139.70x = 7,038,369,236.67
  5. Step 5: Solve for x
    x = 7,038,369,236.67/102,139.70
  6. Step 6: Final answer
    x = 68,909.24

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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.