Home / 145,883,408.42-201,318,501.37-78,902,440.83

Finding the Fourth Proportional to 145,883,408.42, 201,318,501.37 and 78,902,440.83

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Solution

The fourth proportional to 145,883,408.42, 201,318,501.37 and 78,902,440.83 is: 108,885,042.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,883,408.42 : 201,318,501.37 = 78,902,440.83 : x
  2. Step 2: Convert to fraction form
    145,883,408.42/201,318,501.37 = 78,902,440.83/x
  3. Step 3: Cross multiply
    145,883,408.42x = 201,318,501.37 × 78,902,440.83
  4. Step 4: Simplify right side
    145,883,408.42x = 15,884,521,141,421,848
  5. Step 5: Solve for x
    x = 15,884,521,141,421,848/145,883,408.42
  6. Step 6: Final answer
    x = 108,885,042.61

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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.