Home / 99,113.60-136,706.10-90,963.45

Finding the Fourth Proportional to 99,113.60, 136,706.10 and 90,963.45

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Solution

The fourth proportional to 99,113.60, 136,706.10 and 90,963.45 is: 125,464.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,113.60 : 136,706.10 = 90,963.45 : x
  2. Step 2: Convert to fraction form
    99,113.60/136,706.10 = 90,963.45/x
  3. Step 3: Cross multiply
    99,113.60x = 136,706.10 × 90,963.45
  4. Step 4: Simplify right side
    99,113.60x = 12,435,258,492.05
  5. Step 5: Solve for x
    x = 12,435,258,492.05/99,113.60
  6. Step 6: Final answer
    x = 125,464.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.