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Finding the Fourth Proportional to 139,803.23, 209,653.80 and 51,030.47

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Solution

The fourth proportional to 139,803.23, 209,653.80 and 51,030.47 is: 76,527.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,803.23 : 209,653.80 = 51,030.47 : x
  2. Step 2: Convert to fraction form
    139,803.23/209,653.80 = 51,030.47/x
  3. Step 3: Cross multiply
    139,803.23x = 209,653.80 × 51,030.47
  4. Step 4: Simplify right side
    139,803.23x = 10,698,730,903.02
  5. Step 5: Solve for x
    x = 10,698,730,903.02/139,803.23
  6. Step 6: Final answer
    x = 76,527.07

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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.