Home / 156,280.64-215,682.72-89,222.72

Finding the Fourth Proportional to 156,280.64, 215,682.72 and 89,222.72

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Solution

The fourth proportional to 156,280.64, 215,682.72 and 89,222.72 is: 123,136.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,280.64 : 215,682.72 = 89,222.72 : x
  2. Step 2: Convert to fraction form
    156,280.64/215,682.72 = 89,222.72/x
  3. Step 3: Cross multiply
    156,280.64x = 215,682.72 × 89,222.72
  4. Step 4: Simplify right side
    156,280.64x = 19,243,798,935.40
  5. Step 5: Solve for x
    x = 19,243,798,935.40/156,280.64
  6. Step 6: Final answer
    x = 123,136.17

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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.