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Finding the Fourth Proportional to 108,465.51, 162,948.02 and 76,953.81

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Solution

The fourth proportional to 108,465.51, 162,948.02 and 76,953.81 is: 115,607.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,465.51 : 162,948.02 = 76,953.81 : x
  2. Step 2: Convert to fraction form
    108,465.51/162,948.02 = 76,953.81/x
  3. Step 3: Cross multiply
    108,465.51x = 162,948.02 × 76,953.81
  4. Step 4: Simplify right side
    108,465.51x = 12,539,470,586.19
  5. Step 5: Solve for x
    x = 12,539,470,586.19/108,465.51
  6. Step 6: Final answer
    x = 115,607.91

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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.