Home / 210,720.02-315,697.23-121,785.66

Finding the Fourth Proportional to 210,720.02, 315,697.23 and 121,785.66

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Solution

The fourth proportional to 210,720.02, 315,697.23 and 121,785.66 is: 182,457.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,720.02 : 315,697.23 = 121,785.66 : x
  2. Step 2: Convert to fraction form
    210,720.02/315,697.23 = 121,785.66/x
  3. Step 3: Cross multiply
    210,720.02x = 315,697.23 × 121,785.66
  4. Step 4: Simplify right side
    210,720.02x = 38,447,395,515.72
  5. Step 5: Solve for x
    x = 38,447,395,515.72/210,720.02
  6. Step 6: Final answer
    x = 182,457.26

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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.