Home / 223,721.04-308,736.06-128,233.32

Finding the Fourth Proportional to 223,721.04, 308,736.06 and 128,233.32

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Solution

The fourth proportional to 223,721.04, 308,736.06 and 128,233.32 is: 176,962.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,721.04 : 308,736.06 = 128,233.32 : x
  2. Step 2: Convert to fraction form
    223,721.04/308,736.06 = 128,233.32/x
  3. Step 3: Cross multiply
    223,721.04x = 308,736.06 × 128,233.32
  4. Step 4: Simplify right side
    223,721.04x = 39,590,249,977.52
  5. Step 5: Solve for x
    x = 39,590,249,977.52/223,721.04
  6. Step 6: Final answer
    x = 176,962.57

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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.