Home / 147,495,409.90-203,543,633.10-81,415,890.97

Finding the Fourth Proportional to 147,495,409.90, 203,543,633.10 and 81,415,890.97

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Solution

The fourth proportional to 147,495,409.90, 203,543,633.10 and 81,415,890.97 is: 112,353,911.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,495,409.90 : 203,543,633.10 = 81,415,890.97 : x
  2. Step 2: Convert to fraction form
    147,495,409.90/203,543,633.10 = 81,415,890.97/x
  3. Step 3: Cross multiply
    147,495,409.90x = 203,543,633.10 × 81,415,890.97
  4. Step 4: Simplify right side
    147,495,409.90x = 16,571,686,240,107,282
  5. Step 5: Solve for x
    x = 16,571,686,240,107,282/147,495,409.90
  6. Step 6: Final answer
    x = 112,353,911.56

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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.