Home / 186,321.40-257,115.06-101,438.28

Finding the Fourth Proportional to 186,321.40, 257,115.06 and 101,438.28

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Solution

The fourth proportional to 186,321.40, 257,115.06 and 101,438.28 is: 139,980.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,321.40 : 257,115.06 = 101,438.28 : x
  2. Step 2: Convert to fraction form
    186,321.40/257,115.06 = 101,438.28/x
  3. Step 3: Cross multiply
    186,321.40x = 257,115.06 × 101,438.28
  4. Step 4: Simplify right side
    186,321.40x = 26,081,309,448.50
  5. Step 5: Solve for x
    x = 26,081,309,448.50/186,321.40
  6. Step 6: Final answer
    x = 139,980.21

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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.