Home / 139,152,765.39-208,547,572.40-77,739,443.43

Finding the Fourth Proportional to 139,152,765.39, 208,547,572.40 and 77,739,443.43

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Solution

The fourth proportional to 139,152,765.39, 208,547,572.40 and 77,739,443.43 is: 116,507,725.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,152,765.39 : 208,547,572.40 = 77,739,443.43 : x
  2. Step 2: Convert to fraction form
    139,152,765.39/208,547,572.40 = 77,739,443.43/x
  3. Step 3: Cross multiply
    139,152,765.39x = 208,547,572.40 × 77,739,443.43
  4. Step 4: Simplify right side
    139,152,765.39x = 16,212,372,206,664,934
  5. Step 5: Solve for x
    x = 16,212,372,206,664,934/139,152,765.39
  6. Step 6: Final answer
    x = 116,507,725.60

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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.