Home / 186,320.16-279,615.60-139,698.72

Finding the Fourth Proportional to 186,320.16, 279,615.60 and 139,698.72

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Solution

The fourth proportional to 186,320.16, 279,615.60 and 139,698.72 is: 209,649.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,320.16 : 279,615.60 = 139,698.72 : x
  2. Step 2: Convert to fraction form
    186,320.16/279,615.60 = 139,698.72/x
  3. Step 3: Cross multiply
    186,320.16x = 279,615.60 × 139,698.72
  4. Step 4: Simplify right side
    186,320.16x = 39,061,941,412.03
  5. Step 5: Solve for x
    x = 39,061,941,412.03/186,320.16
  6. Step 6: Final answer
    x = 209,649.57

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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.