Home / 147,113.74-203,031.91-86,703.85

Finding the Fourth Proportional to 147,113.74, 203,031.91 and 86,703.85

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Solution

The fourth proportional to 147,113.74, 203,031.91 and 86,703.85 is: 119,660.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,113.74 : 203,031.91 = 86,703.85 : x
  2. Step 2: Convert to fraction form
    147,113.74/203,031.91 = 86,703.85/x
  3. Step 3: Cross multiply
    147,113.74x = 203,031.91 × 86,703.85
  4. Step 4: Simplify right side
    147,113.74x = 17,603,648,269.85
  5. Step 5: Solve for x
    x = 17,603,648,269.85/147,113.74
  6. Step 6: Final answer
    x = 119,660.12

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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.