Home / 126,138.81-174,075.71-72,433.38

Finding the Fourth Proportional to 126,138.81, 174,075.71 and 72,433.38

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Solution

The fourth proportional to 126,138.81, 174,075.71 and 72,433.38 is: 99,960.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,138.81 : 174,075.71 = 72,433.38 : x
  2. Step 2: Convert to fraction form
    126,138.81/174,075.71 = 72,433.38/x
  3. Step 3: Cross multiply
    126,138.81x = 174,075.71 × 72,433.38
  4. Step 4: Simplify right side
    126,138.81x = 12,608,891,689.03
  5. Step 5: Solve for x
    x = 12,608,891,689.03/126,138.81
  6. Step 6: Final answer
    x = 99,960.45

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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.