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Finding the Fourth Proportional to 100,953.90, 139,316.58 and 60,668.28

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Solution

The fourth proportional to 100,953.90, 139,316.58 and 60,668.28 is: 83,722.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,953.90 : 139,316.58 = 60,668.28 : x
  2. Step 2: Convert to fraction form
    100,953.90/139,316.58 = 60,668.28/x
  3. Step 3: Cross multiply
    100,953.90x = 139,316.58 × 60,668.28
  4. Step 4: Simplify right side
    100,953.90x = 8,452,097,284.08
  5. Step 5: Solve for x
    x = 8,452,097,284.08/100,953.90
  6. Step 6: Final answer
    x = 83,722.35

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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.