Home / 139,034,456.40-208,551,684.60-77,812,453.20

Finding the Fourth Proportional to 139,034,456.40, 208,551,684.60 and 77,812,453.20

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Solution

The fourth proportional to 139,034,456.40, 208,551,684.60 and 77,812,453.20 is: 116,718,679.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,034,456.40 : 208,551,684.60 = 77,812,453.20 : x
  2. Step 2: Convert to fraction form
    139,034,456.40/208,551,684.60 = 77,812,453.20/x
  3. Step 3: Cross multiply
    139,034,456.40x = 208,551,684.60 × 77,812,453.20
  4. Step 4: Simplify right side
    139,034,456.40x = 16,227,918,197,718,660
  5. Step 5: Solve for x
    x = 16,227,918,197,718,660/139,034,456.40
  6. Step 6: Final answer
    x = 116,718,679.80

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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.