Home / 156,129.22-215,457.87-84,509.06

Finding the Fourth Proportional to 156,129.22, 215,457.87 and 84,509.06

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Solution

The fourth proportional to 156,129.22, 215,457.87 and 84,509.06 is: 116,622.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,129.22 : 215,457.87 = 84,509.06 : x
  2. Step 2: Convert to fraction form
    156,129.22/215,457.87 = 84,509.06/x
  3. Step 3: Cross multiply
    156,129.22x = 215,457.87 × 84,509.06
  4. Step 4: Simplify right side
    156,129.22x = 18,208,141,302.92
  5. Step 5: Solve for x
    x = 18,208,141,302.92/156,129.22
  6. Step 6: Final answer
    x = 116,622.25

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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.