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Finding the Fourth Proportional to 159,275.41, 219,798.72 and 90,378.04

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Solution

The fourth proportional to 159,275.41, 219,798.72 and 90,378.04 is: 124,720.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,275.41 : 219,798.72 = 90,378.04 : x
  2. Step 2: Convert to fraction form
    159,275.41/219,798.72 = 90,378.04/x
  3. Step 3: Cross multiply
    159,275.41x = 219,798.72 × 90,378.04
  4. Step 4: Simplify right side
    159,275.41x = 19,864,977,508.11
  5. Step 5: Solve for x
    x = 19,864,977,508.11/159,275.41
  6. Step 6: Final answer
    x = 124,720.93

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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.