Home / 121,332.12-167,362.56-86,813.16

Finding the Fourth Proportional to 121,332.12, 167,362.56 and 86,813.16

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Solution

The fourth proportional to 121,332.12, 167,362.56 and 86,813.16 is: 119,747.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,332.12 : 167,362.56 = 86,813.16 : x
  2. Step 2: Convert to fraction form
    121,332.12/167,362.56 = 86,813.16/x
  3. Step 3: Cross multiply
    121,332.12x = 167,362.56 × 86,813.16
  4. Step 4: Simplify right side
    121,332.12x = 14,529,272,699.29
  5. Step 5: Solve for x
    x = 14,529,272,699.29/121,332.12
  6. Step 6: Final answer
    x = 119,747.95

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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.