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Finding the Fourth Proportional to 144,296.43, 216,492.63 and 90,926.74

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Solution

The fourth proportional to 144,296.43, 216,492.63 and 90,926.74 is: 136,420.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,296.43 : 216,492.63 = 90,926.74 : x
  2. Step 2: Convert to fraction form
    144,296.43/216,492.63 = 90,926.74/x
  3. Step 3: Cross multiply
    144,296.43x = 216,492.63 × 90,926.74
  4. Step 4: Simplify right side
    144,296.43x = 19,684,969,079.93
  5. Step 5: Solve for x
    x = 19,684,969,079.93/144,296.43
  6. Step 6: Final answer
    x = 136,420.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.