Home / 211,501.12-291,870.88-120,885.20

Finding the Fourth Proportional to 211,501.12, 291,870.88 and 120,885.20

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Solution

The fourth proportional to 211,501.12, 291,870.88 and 120,885.20 is: 166,821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,501.12 : 291,870.88 = 120,885.20 : x
  2. Step 2: Convert to fraction form
    211,501.12/291,870.88 = 120,885.20/x
  3. Step 3: Cross multiply
    211,501.12x = 291,870.88 × 120,885.20
  4. Step 4: Simplify right side
    211,501.12x = 35,282,869,702.98
  5. Step 5: Solve for x
    x = 35,282,869,702.98/211,501.12
  6. Step 6: Final answer
    x = 166,821.20

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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.