Home / 105,029.46-157,609.35-42,699.78

Finding the Fourth Proportional to 105,029.46, 157,609.35 and 42,699.78

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Solution

The fourth proportional to 105,029.46, 157,609.35 and 42,699.78 is: 64,076.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,029.46 : 157,609.35 = 42,699.78 : x
  2. Step 2: Convert to fraction form
    105,029.46/157,609.35 = 42,699.78/x
  3. Step 3: Cross multiply
    105,029.46x = 157,609.35 × 42,699.78
  4. Step 4: Simplify right side
    105,029.46x = 6,729,884,570.94
  5. Step 5: Solve for x
    x = 6,729,884,570.94/105,029.46
  6. Step 6: Final answer
    x = 64,076.16

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1.5x scale

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.