Home / 103,870.08-143,308.85-63,541.80

Finding the Fourth Proportional to 103,870.08, 143,308.85 and 63,541.80

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Solution

The fourth proportional to 103,870.08, 143,308.85 and 63,541.80 is: 87,668.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,870.08 : 143,308.85 = 63,541.80 : x
  2. Step 2: Convert to fraction form
    103,870.08/143,308.85 = 63,541.80/x
  3. Step 3: Cross multiply
    103,870.08x = 143,308.85 × 63,541.80
  4. Step 4: Simplify right side
    103,870.08x = 9,106,101,967.22
  5. Step 5: Solve for x
    x = 9,106,101,967.22/103,870.08
  6. Step 6: Final answer
    x = 87,668.19

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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.