Home / 112,408.16-155,123.61-61,421.97

Finding the Fourth Proportional to 112,408.16, 155,123.61 and 61,421.97

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Solution

The fourth proportional to 112,408.16, 155,123.61 and 61,421.97 is: 84,762.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,408.16 : 155,123.61 = 61,421.97 : x
  2. Step 2: Convert to fraction form
    112,408.16/155,123.61 = 61,421.97/x
  3. Step 3: Cross multiply
    112,408.16x = 155,123.61 × 61,421.97
  4. Step 4: Simplify right side
    112,408.16x = 9,527,997,634.81
  5. Step 5: Solve for x
    x = 9,527,997,634.81/112,408.16
  6. Step 6: Final answer
    x = 84,762.51

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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.