Home / 140,249,724.74-193,540,907.49-78,370,571.78

Finding the Fourth Proportional to 140,249,724.74, 193,540,907.49 and 78,370,571.78

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Solution

The fourth proportional to 140,249,724.74, 193,540,907.49 and 78,370,571.78 is: 108,149,314.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,249,724.74 : 193,540,907.49 = 78,370,571.78 : x
  2. Step 2: Convert to fraction form
    140,249,724.74/193,540,907.49 = 78,370,571.78/x
  3. Step 3: Cross multiply
    140,249,724.74x = 193,540,907.49 × 78,370,571.78
  4. Step 4: Simplify right side
    140,249,724.74x = 15,167,911,582,811,386
  5. Step 5: Solve for x
    x = 15,167,911,582,811,386/140,249,724.74
  6. Step 6: Final answer
    x = 108,149,314.45

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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.