Home / 103,628.28-143,018.10-63,365.64

Finding the Fourth Proportional to 103,628.28, 143,018.10 and 63,365.64

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Solution

The fourth proportional to 103,628.28, 143,018.10 and 63,365.64 is: 87,451.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,628.28 : 143,018.10 = 63,365.64 : x
  2. Step 2: Convert to fraction form
    103,628.28/143,018.10 = 63,365.64/x
  3. Step 3: Cross multiply
    103,628.28x = 143,018.10 × 63,365.64
  4. Step 4: Simplify right side
    103,628.28x = 9,062,433,438.08
  5. Step 5: Solve for x
    x = 9,062,433,438.08/103,628.28
  6. Step 6: Final answer
    x = 87,451.35

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1.5x scale

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.