Home / 145,661.16-201,031.56-82,011.36

Finding the Fourth Proportional to 145,661.16, 201,031.56 and 82,011.36

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Solution

The fourth proportional to 145,661.16, 201,031.56 and 82,011.36 is: 113,186.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,661.16 : 201,031.56 = 82,011.36 : x
  2. Step 2: Convert to fraction form
    145,661.16/201,031.56 = 82,011.36/x
  3. Step 3: Cross multiply
    145,661.16x = 201,031.56 × 82,011.36
  4. Step 4: Simplify right side
    145,661.16x = 16,486,871,638.52
  5. Step 5: Solve for x
    x = 16,486,871,638.52/145,661.16
  6. Step 6: Final answer
    x = 113,186.46

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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.