Home / 163,945.13-245,817.53-78,582.11

Finding the Fourth Proportional to 163,945.13, 245,817.53 and 78,582.11

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Solution

The fourth proportional to 163,945.13, 245,817.53 and 78,582.11 is: 117,825.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,945.13 : 245,817.53 = 78,582.11 : x
  2. Step 2: Convert to fraction form
    163,945.13/245,817.53 = 78,582.11/x
  3. Step 3: Cross multiply
    163,945.13x = 245,817.53 × 78,582.11
  4. Step 4: Simplify right side
    163,945.13x = 19,316,860,362.47
  5. Step 5: Solve for x
    x = 19,316,860,362.47/163,945.13
  6. Step 6: Final answer
    x = 117,825.15

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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.