Home / 210,830.52-290,959.02-121,435.32

Finding the Fourth Proportional to 210,830.52, 290,959.02 and 121,435.32

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Solution

The fourth proportional to 210,830.52, 290,959.02 and 121,435.32 is: 167,588.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,830.52 : 290,959.02 = 121,435.32 : x
  2. Step 2: Convert to fraction form
    210,830.52/290,959.02 = 121,435.32/x
  3. Step 3: Cross multiply
    210,830.52x = 290,959.02 × 121,435.32
  4. Step 4: Simplify right side
    210,830.52x = 35,332,701,700.59
  5. Step 5: Solve for x
    x = 35,332,701,700.59/210,830.52
  6. Step 6: Final answer
    x = 167,588.17

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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.