Home / 137,483,856.89-189,731,318.28-74,763,623.12

Finding the Fourth Proportional to 137,483,856.89, 189,731,318.28 and 74,763,623.12

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Solution

The fourth proportional to 137,483,856.89, 189,731,318.28 and 74,763,623.12 is: 103,175,755.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,483,856.89 : 189,731,318.28 = 74,763,623.12 : x
  2. Step 2: Convert to fraction form
    137,483,856.89/189,731,318.28 = 74,763,623.12/x
  3. Step 3: Cross multiply
    137,483,856.89x = 189,731,318.28 × 74,763,623.12
  4. Step 4: Simplify right side
    137,483,856.89x = 14,185,000,774,421,016
  5. Step 5: Solve for x
    x = 14,185,000,774,421,016/137,483,856.89
  6. Step 6: Final answer
    x = 103,175,755.29

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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.