Home / 138,699.75-191,407.04-75,038.92

Finding the Fourth Proportional to 138,699.75, 191,407.04 and 75,038.92

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Solution

The fourth proportional to 138,699.75, 191,407.04 and 75,038.92 is: 103,554.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,699.75 : 191,407.04 = 75,038.92 : x
  2. Step 2: Convert to fraction form
    138,699.75/191,407.04 = 75,038.92/x
  3. Step 3: Cross multiply
    138,699.75x = 191,407.04 × 75,038.92
  4. Step 4: Simplify right side
    138,699.75x = 14,362,976,604.96
  5. Step 5: Solve for x
    x = 14,362,976,604.96/138,699.75
  6. Step 6: Final answer
    x = 103,554.45

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1.5x scale

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.