Home / 140,249,725.74-193,540,908.87-78,370,572.78

Finding the Fourth Proportional to 140,249,725.74, 193,540,908.87 and 78,370,572.78

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Solution

The fourth proportional to 140,249,725.74, 193,540,908.87 and 78,370,572.78 is: 108,149,315.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,249,725.74 : 193,540,908.87 = 78,370,572.78 : x
  2. Step 2: Convert to fraction form
    140,249,725.74/193,540,908.87 = 78,370,572.78/x
  3. Step 3: Cross multiply
    140,249,725.74x = 193,540,908.87 × 78,370,572.78
  4. Step 4: Simplify right side
    140,249,725.74x = 15,167,911,884,503,684
  5. Step 5: Solve for x
    x = 15,167,911,884,503,684/140,249,725.74
  6. Step 6: Final answer
    x = 108,149,315.83

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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.