Home / 209,153.12-313,724.72-51,381.36

Finding the Fourth Proportional to 209,153.12, 313,724.72 and 51,381.36

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Solution

The fourth proportional to 209,153.12, 313,724.72 and 51,381.36 is: 77,070.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,153.12 : 313,724.72 = 51,381.36 : x
  2. Step 2: Convert to fraction form
    209,153.12/313,724.72 = 51,381.36/x
  3. Step 3: Cross multiply
    209,153.12x = 313,724.72 × 51,381.36
  4. Step 4: Simplify right side
    209,153.12x = 16,119,602,779.22
  5. Step 5: Solve for x
    x = 16,119,602,779.22/209,153.12
  6. Step 6: Final answer
    x = 77,070.82

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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.