Home / 208,088,859.30-312,038,810.55-78,653,451.30

Finding the Fourth Proportional to 208,088,859.30, 312,038,810.55 and 78,653,451.30

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Solution

The fourth proportional to 208,088,859.30, 312,038,810.55 and 78,653,451.30 is: 117,944,465.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,088,859.30 : 312,038,810.55 = 78,653,451.30 : x
  2. Step 2: Convert to fraction form
    208,088,859.30/312,038,810.55 = 78,653,451.30/x
  3. Step 3: Cross multiply
    208,088,859.30x = 312,038,810.55 × 78,653,451.30
  4. Step 4: Simplify right side
    208,088,859.30x = 24,542,929,389,304,352
  5. Step 5: Solve for x
    x = 24,542,929,389,304,352/208,088,859.30
  6. Step 6: Final answer
    x = 117,944,465.99

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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.