Home / 186,875.12-257,813.16-115,130.72

Finding the Fourth Proportional to 186,875.12, 257,813.16 and 115,130.72

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Solution

The fourth proportional to 186,875.12, 257,813.16 and 115,130.72 is: 158,834.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,875.12 : 257,813.16 = 115,130.72 : x
  2. Step 2: Convert to fraction form
    186,875.12/257,813.16 = 115,130.72/x
  3. Step 3: Cross multiply
    186,875.12x = 257,813.16 × 115,130.72
  4. Step 4: Simplify right side
    186,875.12x = 29,682,214,736.28
  5. Step 5: Solve for x
    x = 29,682,214,736.28/186,875.12
  6. Step 6: Final answer
    x = 158,834.49

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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.