Home / 208,139,117.95-312,087,657.97-78,756,722.83

Finding the Fourth Proportional to 208,139,117.95, 312,087,657.97 and 78,756,722.83

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Solution

The fourth proportional to 208,139,117.95, 312,087,657.97 and 78,756,722.83 is: 118,089,292.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,139,117.95 : 312,087,657.97 = 78,756,722.83 : x
  2. Step 2: Convert to fraction form
    208,139,117.95/312,087,657.97 = 78,756,722.83/x
  3. Step 3: Cross multiply
    208,139,117.95x = 312,087,657.97 × 78,756,722.83
  4. Step 4: Simplify right side
    208,139,117.95x = 24,579,001,175,452,908
  5. Step 5: Solve for x
    x = 24,579,001,175,452,908/208,139,117.95
  6. Step 6: Final answer
    x = 118,089,292.48

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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.