Home / 139,547,292.80-192,579,043.20-77,674,438.40

Finding the Fourth Proportional to 139,547,292.80, 192,579,043.20 and 77,674,438.40

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Solution

The fourth proportional to 139,547,292.80, 192,579,043.20 and 77,674,438.40 is: 107,192,828.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,547,292.80 : 192,579,043.20 = 77,674,438.40 : x
  2. Step 2: Convert to fraction form
    139,547,292.80/192,579,043.20 = 77,674,438.40/x
  3. Step 3: Cross multiply
    139,547,292.80x = 192,579,043.20 × 77,674,438.40
  4. Step 4: Simplify right side
    139,547,292.80x = 14,958,469,028,169,340
  5. Step 5: Solve for x
    x = 14,958,469,028,169,340/139,547,292.80
  6. Step 6: Final answer
    x = 107,192,828.52

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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.