Home / 103,128.17-154,386.03-56,238.89

Finding the Fourth Proportional to 103,128.17, 154,386.03 and 56,238.89

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Solution

The fourth proportional to 103,128.17, 154,386.03 and 56,238.89 is: 84,191.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,128.17 : 154,386.03 = 56,238.89 : x
  2. Step 2: Convert to fraction form
    103,128.17/154,386.03 = 56,238.89/x
  3. Step 3: Cross multiply
    103,128.17x = 154,386.03 × 56,238.89
  4. Step 4: Simplify right side
    103,128.17x = 8,682,498,958.71
  5. Step 5: Solve for x
    x = 8,682,498,958.71/103,128.17
  6. Step 6: Final answer
    x = 84,191.34

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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.