Home / 136,830.48-188,829.27-76,399.08

Finding the Fourth Proportional to 136,830.48, 188,829.27 and 76,399.08

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Solution

The fourth proportional to 136,830.48, 188,829.27 and 76,399.08 is: 105,432.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,830.48 : 188,829.27 = 76,399.08 : x
  2. Step 2: Convert to fraction form
    136,830.48/188,829.27 = 76,399.08/x
  3. Step 3: Cross multiply
    136,830.48x = 188,829.27 × 76,399.08
  4. Step 4: Simplify right side
    136,830.48x = 14,426,382,505.07
  5. Step 5: Solve for x
    x = 14,426,382,505.07/136,830.48
  6. Step 6: Final answer
    x = 105,432.52

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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.