Home / 86,534.34-129,037.68-83,450.64

Finding the Fourth Proportional to 86,534.34, 129,037.68 and 83,450.64

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Solution

The fourth proportional to 86,534.34, 129,037.68 and 83,450.64 is: 124,439.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,534.34 : 129,037.68 = 83,450.64 : x
  2. Step 2: Convert to fraction form
    86,534.34/129,037.68 = 83,450.64/x
  3. Step 3: Cross multiply
    86,534.34x = 129,037.68 × 83,450.64
  4. Step 4: Simplify right side
    86,534.34x = 10,768,276,980.12
  5. Step 5: Solve for x
    x = 10,768,276,980.12/86,534.34
  6. Step 6: Final answer
    x = 124,439.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.