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Finding the Fourth Proportional to 98,322.74, 147,372.59 and 86,453.59

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Solution

The fourth proportional to 98,322.74, 147,372.59 and 86,453.59 is: 129,582.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,322.74 : 147,372.59 = 86,453.59 : x
  2. Step 2: Convert to fraction form
    98,322.74/147,372.59 = 86,453.59/x
  3. Step 3: Cross multiply
    98,322.74x = 147,372.59 × 86,453.59
  4. Step 4: Simplify right side
    98,322.74x = 12,740,889,561.22
  5. Step 5: Solve for x
    x = 12,740,889,561.22/98,322.74
  6. Step 6: Final answer
    x = 129,582.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.