Home / 158,564.10-218,818.32-86,945.31

Finding the Fourth Proportional to 158,564.10, 218,818.32 and 86,945.31

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Solution

The fourth proportional to 158,564.10, 218,818.32 and 86,945.31 is: 119,984.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,564.10 : 218,818.32 = 86,945.31 : x
  2. Step 2: Convert to fraction form
    158,564.10/218,818.32 = 86,945.31/x
  3. Step 3: Cross multiply
    158,564.10x = 218,818.32 × 86,945.31
  4. Step 4: Simplify right side
    158,564.10x = 19,025,226,666.08
  5. Step 5: Solve for x
    x = 19,025,226,666.08/158,564.10
  6. Step 6: Final answer
    x = 119,984.45

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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.