Home / 138,787,807.20-208,032,411.60-52,492,869.60

Finding the Fourth Proportional to 138,787,807.20, 208,032,411.60 and 52,492,869.60

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Solution

The fourth proportional to 138,787,807.20, 208,032,411.60 and 52,492,869.60 is: 78,682,835.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,787,807.20 : 208,032,411.60 = 52,492,869.60 : x
  2. Step 2: Convert to fraction form
    138,787,807.20/208,032,411.60 = 52,492,869.60/x
  3. Step 3: Cross multiply
    138,787,807.20x = 208,032,411.60 × 52,492,869.60
  4. Step 4: Simplify right side
    138,787,807.20x = 10,920,218,254,692,328
  5. Step 5: Solve for x
    x = 10,920,218,254,692,328/138,787,807.20
  6. Step 6: Final answer
    x = 78,682,835.87

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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.