Home / 137,180,712.71-189,309,652.32-81,437,312.45

Finding the Fourth Proportional to 137,180,712.71, 189,309,652.32 and 81,437,312.45

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Solution

The fourth proportional to 137,180,712.71, 189,309,652.32 and 81,437,312.45 is: 112,383,650.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,180,712.71 : 189,309,652.32 = 81,437,312.45 : x
  2. Step 2: Convert to fraction form
    137,180,712.71/189,309,652.32 = 81,437,312.45/x
  3. Step 3: Cross multiply
    137,180,712.71x = 189,309,652.32 × 81,437,312.45
  4. Step 4: Simplify right side
    137,180,712.71x = 15,416,869,304,838,158
  5. Step 5: Solve for x
    x = 15,416,869,304,838,158/137,180,712.71
  6. Step 6: Final answer
    x = 112,383,650.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.