Home / 98,162.78-147,258.09-31,587.44

Finding the Fourth Proportional to 98,162.78, 147,258.09 and 31,587.44

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Solution

The fourth proportional to 98,162.78, 147,258.09 and 31,587.44 is: 47,385.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,162.78 : 147,258.09 = 31,587.44 : x
  2. Step 2: Convert to fraction form
    98,162.78/147,258.09 = 31,587.44/x
  3. Step 3: Cross multiply
    98,162.78x = 147,258.09 × 31,587.44
  4. Step 4: Simplify right side
    98,162.78x = 4,651,506,082.39
  5. Step 5: Solve for x
    x = 4,651,506,082.39/98,162.78
  6. Step 6: Final answer
    x = 47,385.64

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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.