Home / 80,745,205.80-121,117,808.70-42,003,156.90

Finding the Fourth Proportional to 80,745,205.80, 121,117,808.70 and 42,003,156.90

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Solution

The fourth proportional to 80,745,205.80, 121,117,808.70 and 42,003,156.90 is: 63,004,735.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,745,205.80 : 121,117,808.70 = 42,003,156.90 : x
  2. Step 2: Convert to fraction form
    80,745,205.80/121,117,808.70 = 42,003,156.90/x
  3. Step 3: Cross multiply
    80,745,205.80x = 121,117,808.70 × 42,003,156.90
  4. Step 4: Simplify right side
    80,745,205.80x = 5,087,330,322,210,285
  5. Step 5: Solve for x
    x = 5,087,330,322,210,285/80,745,205.80
  6. Step 6: Final answer
    x = 63,004,735.35

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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.