Home / 139,038,797.64-208,594,543.20-80,690,384.88

Finding the Fourth Proportional to 139,038,797.64, 208,594,543.20 and 80,690,384.88

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Solution

The fourth proportional to 139,038,797.64, 208,594,543.20 and 80,690,384.88 is: 121,056,670.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,038,797.64 : 208,594,543.20 = 80,690,384.88 : x
  2. Step 2: Convert to fraction form
    139,038,797.64/208,594,543.20 = 80,690,384.88/x
  3. Step 3: Cross multiply
    139,038,797.64x = 208,594,543.20 × 80,690,384.88
  4. Step 4: Simplify right side
    139,038,797.64x = 16,831,573,974,675,784
  5. Step 5: Solve for x
    x = 16,831,573,974,675,784/139,038,797.64
  6. Step 6: Final answer
    x = 121,056,670.95

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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.