Home / 99,830.70-149,746.05-92,613.60

Finding the Fourth Proportional to 99,830.70, 149,746.05 and 92,613.60

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Solution

The fourth proportional to 99,830.70, 149,746.05 and 92,613.60 is: 138,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,830.70 : 149,746.05 = 92,613.60 : x
  2. Step 2: Convert to fraction form
    99,830.70/149,746.05 = 92,613.60/x
  3. Step 3: Cross multiply
    99,830.70x = 149,746.05 × 92,613.60
  4. Step 4: Simplify right side
    99,830.70x = 13,868,520,776.28
  5. Step 5: Solve for x
    x = 13,868,520,776.28/99,830.70
  6. Step 6: Final answer
    x = 138,920.40

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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.