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Finding the Fourth Proportional to 112,155.58, 154,770.40 and 61,854.58

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Solution

The fourth proportional to 112,155.58, 154,770.40 and 61,854.58 is: 85,356.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,155.58 : 154,770.40 = 61,854.58 : x
  2. Step 2: Convert to fraction form
    112,155.58/154,770.40 = 61,854.58/x
  3. Step 3: Cross multiply
    112,155.58x = 154,770.40 × 61,854.58
  4. Step 4: Simplify right side
    112,155.58x = 9,573,258,088.43
  5. Step 5: Solve for x
    x = 9,573,258,088.43/112,155.58
  6. Step 6: Final answer
    x = 85,356.95

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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.