Home / 139,244.48-208,711.19-128,034.89

Finding the Fourth Proportional to 139,244.48, 208,711.19 and 128,034.89

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Solution

The fourth proportional to 139,244.48, 208,711.19 and 128,034.89 is: 191,909.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,244.48 : 208,711.19 = 128,034.89 : x
  2. Step 2: Convert to fraction form
    139,244.48/208,711.19 = 128,034.89/x
  3. Step 3: Cross multiply
    139,244.48x = 208,711.19 × 128,034.89
  4. Step 4: Simplify right side
    139,244.48x = 26,722,312,569.69
  5. Step 5: Solve for x
    x = 26,722,312,569.69/139,244.48
  6. Step 6: Final answer
    x = 191,909.32

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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.