Home / 139,120.16-208,681.86-39,282.80

Finding the Fourth Proportional to 139,120.16, 208,681.86 and 39,282.80

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Solution

The fourth proportional to 139,120.16, 208,681.86 and 39,282.80 is: 58,924.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,120.16 : 208,681.86 = 39,282.80 : x
  2. Step 2: Convert to fraction form
    139,120.16/208,681.86 = 39,282.80/x
  3. Step 3: Cross multiply
    139,120.16x = 208,681.86 × 39,282.80
  4. Step 4: Simplify right side
    139,120.16x = 8,197,607,770.01
  5. Step 5: Solve for x
    x = 8,197,607,770.01/139,120.16
  6. Step 6: Final answer
    x = 58,924.66

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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.