Home / 101,031.95-139,421.41-55,709.16

Finding the Fourth Proportional to 101,031.95, 139,421.41 and 55,709.16

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Solution

The fourth proportional to 101,031.95, 139,421.41 and 55,709.16 is: 76,877.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,031.95 : 139,421.41 = 55,709.16 : x
  2. Step 2: Convert to fraction form
    101,031.95/139,421.41 = 55,709.16/x
  3. Step 3: Cross multiply
    101,031.95x = 139,421.41 × 55,709.16
  4. Step 4: Simplify right side
    101,031.95x = 7,767,049,497.84
  5. Step 5: Solve for x
    x = 7,767,049,497.84/101,031.95
  6. Step 6: Final answer
    x = 76,877.16

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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.