Home / 114,981.23-158,538.36-78,700.16

Finding the Fourth Proportional to 114,981.23, 158,538.36 and 78,700.16

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Solution

The fourth proportional to 114,981.23, 158,538.36 and 78,700.16 is: 108,513.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,981.23 : 158,538.36 = 78,700.16 : x
  2. Step 2: Convert to fraction form
    114,981.23/158,538.36 = 78,700.16/x
  3. Step 3: Cross multiply
    114,981.23x = 158,538.36 × 78,700.16
  4. Step 4: Simplify right side
    114,981.23x = 12,476,994,298.14
  5. Step 5: Solve for x
    x = 12,476,994,298.14/114,981.23
  6. Step 6: Final answer
    x = 108,513.31

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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.