Home / 118,880.21-178,347.65-38,920.76

Finding the Fourth Proportional to 118,880.21, 178,347.65 and 38,920.76

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Solution

The fourth proportional to 118,880.21, 178,347.65 and 38,920.76 is: 58,390.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,880.21 : 178,347.65 = 38,920.76 : x
  2. Step 2: Convert to fraction form
    118,880.21/178,347.65 = 38,920.76/x
  3. Step 3: Cross multiply
    118,880.21x = 178,347.65 × 38,920.76
  4. Step 4: Simplify right side
    118,880.21x = 6,941,426,082.21
  5. Step 5: Solve for x
    x = 6,941,426,082.21/118,880.21
  6. Step 6: Final answer
    x = 58,390.09

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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.