Home / 218,798.36-302,042.54-128,141.72

Finding the Fourth Proportional to 218,798.36, 302,042.54 and 128,141.72

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Solution

The fourth proportional to 218,798.36, 302,042.54 and 128,141.72 is: 176,894.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,798.36 : 302,042.54 = 128,141.72 : x
  2. Step 2: Convert to fraction form
    218,798.36/302,042.54 = 128,141.72/x
  3. Step 3: Cross multiply
    218,798.36x = 302,042.54 × 128,141.72
  4. Step 4: Simplify right side
    218,798.36x = 38,704,250,588.77
  5. Step 5: Solve for x
    x = 38,704,250,588.77/218,798.36
  6. Step 6: Final answer
    x = 176,894.61

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1.5x scale

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.