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Finding the Fourth Proportional to 156,153.89, 215,492.43 and 84,533.91

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Solution

The fourth proportional to 156,153.89, 215,492.43 and 84,533.91 is: 116,656.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,153.89 : 215,492.43 = 84,533.91 : x
  2. Step 2: Convert to fraction form
    156,153.89/215,492.43 = 84,533.91/x
  3. Step 3: Cross multiply
    156,153.89x = 215,492.43 × 84,533.91
  4. Step 4: Simplify right side
    156,153.89x = 18,216,417,192.21
  5. Step 5: Solve for x
    x = 18,216,417,192.21/156,153.89
  6. Step 6: Final answer
    x = 116,656.83

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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.