Home / 126,435.72-174,486.30-72,720.68

Finding the Fourth Proportional to 126,435.72, 174,486.30 and 72,720.68

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Solution

The fourth proportional to 126,435.72, 174,486.30 and 72,720.68 is: 100,357.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,435.72 : 174,486.30 = 72,720.68 : x
  2. Step 2: Convert to fraction form
    126,435.72/174,486.30 = 72,720.68/x
  3. Step 3: Cross multiply
    126,435.72x = 174,486.30 × 72,720.68
  4. Step 4: Simplify right side
    126,435.72x = 12,688,762,386.68
  5. Step 5: Solve for x
    x = 12,688,762,386.68/126,435.72
  6. Step 6: Final answer
    x = 100,357.42

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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.