Home / 161,445.90-242,166.40-72,636.68

Finding the Fourth Proportional to 161,445.90, 242,166.40 and 72,636.68

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Solution

The fourth proportional to 161,445.90, 242,166.40 and 72,636.68 is: 108,953.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,445.90 : 242,166.40 = 72,636.68 : x
  2. Step 2: Convert to fraction form
    161,445.90/242,166.40 = 72,636.68/x
  3. Step 3: Cross multiply
    161,445.90x = 242,166.40 × 72,636.68
  4. Step 4: Simplify right side
    161,445.90x = 17,590,163,303.55
  5. Step 5: Solve for x
    x = 17,590,163,303.55/161,445.90
  6. Step 6: Final answer
    x = 108,953.92

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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.