Home / 139,048,872.40-208,598,191.80-58,278,005.20

Finding the Fourth Proportional to 139,048,872.40, 208,598,191.80 and 58,278,005.20

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Solution

The fourth proportional to 139,048,872.40, 208,598,191.80 and 58,278,005.20 is: 87,427,436.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,048,872.40 : 208,598,191.80 = 58,278,005.20 : x
  2. Step 2: Convert to fraction form
    139,048,872.40/208,598,191.80 = 58,278,005.20/x
  3. Step 3: Cross multiply
    139,048,872.40x = 208,598,191.80 × 58,278,005.20
  4. Step 4: Simplify right side
    139,048,872.40x = 12,156,686,506,430,998
  5. Step 5: Solve for x
    x = 12,156,686,506,430,998/139,048,872.40
  6. Step 6: Final answer
    x = 87,427,436.82

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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.