Home / 186,378.38-279,460.94-86,487.15

Finding the Fourth Proportional to 186,378.38, 279,460.94 and 86,487.15

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Solution

The fourth proportional to 186,378.38, 279,460.94 and 86,487.15 is: 129,681.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,378.38 : 279,460.94 = 86,487.15 : x
  2. Step 2: Convert to fraction form
    186,378.38/279,460.94 = 86,487.15/x
  3. Step 3: Cross multiply
    186,378.38x = 279,460.94 × 86,487.15
  4. Step 4: Simplify right side
    186,378.38x = 24,169,779,804.49
  5. Step 5: Solve for x
    x = 24,169,779,804.49/186,378.38
  6. Step 6: Final answer
    x = 129,681.25

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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.