Home / 139,909.47-193,075.21-76,247.31

Finding the Fourth Proportional to 139,909.47, 193,075.21 and 76,247.31

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Solution

The fourth proportional to 139,909.47, 193,075.21 and 76,247.31 is: 105,221.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,909.47 : 193,075.21 = 76,247.31 : x
  2. Step 2: Convert to fraction form
    139,909.47/193,075.21 = 76,247.31/x
  3. Step 3: Cross multiply
    139,909.47x = 193,075.21 × 76,247.31
  4. Step 4: Simplify right side
    139,909.47x = 14,721,465,390.19
  5. Step 5: Solve for x
    x = 14,721,465,390.19/139,909.47
  6. Step 6: Final answer
    x = 105,221.36

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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.