Home / 112,123.12-154,740.84-83,779.60

Finding the Fourth Proportional to 112,123.12, 154,740.84 and 83,779.60

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Solution

The fourth proportional to 112,123.12, 154,740.84 and 83,779.60 is: 115,624.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,123.12 : 154,740.84 = 83,779.60 : x
  2. Step 2: Convert to fraction form
    112,123.12/154,740.84 = 83,779.60/x
  3. Step 3: Cross multiply
    112,123.12x = 154,740.84 × 83,779.60
  4. Step 4: Simplify right side
    112,123.12x = 12,964,125,678.86
  5. Step 5: Solve for x
    x = 12,964,125,678.86/112,123.12
  6. Step 6: Final answer
    x = 115,624.02

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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.