Home / 156,142.42-215,298.21-124,312.66

Finding the Fourth Proportional to 156,142.42, 215,298.21 and 124,312.66

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Solution

The fourth proportional to 156,142.42, 215,298.21 and 124,312.66 is: 171,409.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,142.42 : 215,298.21 = 124,312.66 : x
  2. Step 2: Convert to fraction form
    156,142.42/215,298.21 = 124,312.66/x
  3. Step 3: Cross multiply
    156,142.42x = 215,298.21 × 124,312.66
  4. Step 4: Simplify right side
    156,142.42x = 26,764,293,178.34
  5. Step 5: Solve for x
    x = 26,764,293,178.34/156,142.42
  6. Step 6: Final answer
    x = 171,409.49

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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.