Home / 139,963,795.85-209,937,846.52-42,919,237.02

Finding the Fourth Proportional to 139,963,795.85, 209,937,846.52 and 42,919,237.02

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Solution

The fourth proportional to 139,963,795.85, 209,937,846.52 and 42,919,237.02 is: 64,376,449.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,963,795.85 : 209,937,846.52 = 42,919,237.02 : x
  2. Step 2: Convert to fraction form
    139,963,795.85/209,937,846.52 = 42,919,237.02/x
  3. Step 3: Cross multiply
    139,963,795.85x = 209,937,846.52 × 42,919,237.02
  4. Step 4: Simplify right side
    139,963,795.85x = 9,010,372,194,859,542
  5. Step 5: Solve for x
    x = 9,010,372,194,859,542/139,963,795.85
  6. Step 6: Final answer
    x = 64,376,449.21

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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.