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Finding the Fourth Proportional to 156,643.88, 216,165.51 and 88,673.74

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Solution

The fourth proportional to 156,643.88, 216,165.51 and 88,673.74 is: 122,368.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,643.88 : 216,165.51 = 88,673.74 : x
  2. Step 2: Convert to fraction form
    156,643.88/216,165.51 = 88,673.74/x
  3. Step 3: Cross multiply
    156,643.88x = 216,165.51 × 88,673.74
  4. Step 4: Simplify right side
    156,643.88x = 19,168,203,690.29
  5. Step 5: Solve for x
    x = 19,168,203,690.29/156,643.88
  6. Step 6: Final answer
    x = 122,368.04

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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.