Home / 126,436.23-174,487.01-72,721.17

Finding the Fourth Proportional to 126,436.23, 174,487.01 and 72,721.17

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Solution

The fourth proportional to 126,436.23, 174,487.01 and 72,721.17 is: 100,358.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,436.23 : 174,487.01 = 72,721.17 : x
  2. Step 2: Convert to fraction form
    126,436.23/174,487.01 = 72,721.17/x
  3. Step 3: Cross multiply
    126,436.23x = 174,487.01 × 72,721.17
  4. Step 4: Simplify right side
    126,436.23x = 12,688,899,153.40
  5. Step 5: Solve for x
    x = 12,688,899,153.40/126,436.23
  6. Step 6: Final answer
    x = 100,358.09

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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.