Home / 75,392.40-113,200.20-42,178.80

Finding the Fourth Proportional to 75,392.40, 113,200.20 and 42,178.80

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Solution

The fourth proportional to 75,392.40, 113,200.20 and 42,178.80 is: 63,330.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,392.40 : 113,200.20 = 42,178.80 : x
  2. Step 2: Convert to fraction form
    75,392.40/113,200.20 = 42,178.80/x
  3. Step 3: Cross multiply
    75,392.40x = 113,200.20 × 42,178.80
  4. Step 4: Simplify right side
    75,392.40x = 4,774,648,595.76
  5. Step 5: Solve for x
    x = 4,774,648,595.76/75,392.40
  6. Step 6: Final answer
    x = 63,330.64

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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.