Home / 139,013.41-208,520.10-120,237.65

Finding the Fourth Proportional to 139,013.41, 208,520.10 and 120,237.65

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Solution

The fourth proportional to 139,013.41, 208,520.10 and 120,237.65 is: 180,356.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,013.41 : 208,520.10 = 120,237.65 : x
  2. Step 2: Convert to fraction form
    139,013.41/208,520.10 = 120,237.65/x
  3. Step 3: Cross multiply
    139,013.41x = 208,520.10 × 120,237.65
  4. Step 4: Simplify right side
    139,013.41x = 25,071,966,801.77
  5. Step 5: Solve for x
    x = 25,071,966,801.77/139,013.41
  6. Step 6: Final answer
    x = 180,356.46

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1.5x scale

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.