Home / 139,387.30-209,088.89-39,539.68

Finding the Fourth Proportional to 139,387.30, 209,088.89 and 39,539.68

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Solution

The fourth proportional to 139,387.30, 209,088.89 and 39,539.68 is: 59,311.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,387.30 : 209,088.89 = 39,539.68 : x
  2. Step 2: Convert to fraction form
    139,387.30/209,088.89 = 39,539.68/x
  3. Step 3: Cross multiply
    139,387.30x = 209,088.89 × 39,539.68
  4. Step 4: Simplify right side
    139,387.30x = 8,267,307,802.16
  5. Step 5: Solve for x
    x = 8,267,307,802.16/139,387.30
  6. Step 6: Final answer
    x = 59,311.77

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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.