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Finding the Fourth Proportional to 101,014.40, 139,488 and 63,353.60

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Solution

The fourth proportional to 101,014.40, 139,488 and 63,353.60 is: 87,483.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,014.40 : 139,488 = 63,353.60 : x
  2. Step 2: Convert to fraction form
    101,014.40/139,488 = 63,353.60/x
  3. Step 3: Cross multiply
    101,014.40x = 139,488 × 63,353.60
  4. Step 4: Simplify right side
    101,014.40x = 8,837,066,956.80
  5. Step 5: Solve for x
    x = 8,837,066,956.80/101,014.40
  6. Step 6: Final answer
    x = 87,483.24

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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.