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Finding the Fourth Proportional to 101,603.62, 140,281.49 and 63,421.32

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Solution

The fourth proportional to 101,603.62, 140,281.49 and 63,421.32 is: 87,564.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,603.62 : 140,281.49 = 63,421.32 : x
  2. Step 2: Convert to fraction form
    101,603.62/140,281.49 = 63,421.32/x
  3. Step 3: Cross multiply
    101,603.62x = 140,281.49 × 63,421.32
  4. Step 4: Simplify right side
    101,603.62x = 8,896,837,267.37
  5. Step 5: Solve for x
    x = 8,896,837,267.37/101,603.62
  6. Step 6: Final answer
    x = 87,564.18

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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.