Home / 121,427.61-182,031.14-42,498.78

Finding the Fourth Proportional to 121,427.61, 182,031.14 and 42,498.78

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Solution

The fourth proportional to 121,427.61, 182,031.14 and 42,498.78 is: 63,709.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,427.61 : 182,031.14 = 42,498.78 : x
  2. Step 2: Convert to fraction form
    121,427.61/182,031.14 = 42,498.78/x
  3. Step 3: Cross multiply
    121,427.61x = 182,031.14 × 42,498.78
  4. Step 4: Simplify right side
    121,427.61x = 7,736,100,249.36
  5. Step 5: Solve for x
    x = 7,736,100,249.36/121,427.61
  6. Step 6: Final answer
    x = 63,709.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.