Home / 210,189.12-315,416.16-140,118.72

Finding the Fourth Proportional to 210,189.12, 315,416.16 and 140,118.72

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Solution

The fourth proportional to 210,189.12, 315,416.16 and 140,118.72 is: 210,266.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,189.12 : 315,416.16 = 140,118.72 : x
  2. Step 2: Convert to fraction form
    210,189.12/315,416.16 = 140,118.72/x
  3. Step 3: Cross multiply
    210,189.12x = 315,416.16 × 140,118.72
  4. Step 4: Simplify right side
    210,189.12x = 44,195,708,606.52
  5. Step 5: Solve for x
    x = 44,195,708,606.52/210,189.12
  6. Step 6: Final answer
    x = 210,266.40

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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.