Home / 111,585.51-167,167.17-86,502.65

Finding the Fourth Proportional to 111,585.51, 167,167.17 and 86,502.65

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Solution

The fourth proportional to 111,585.51, 167,167.17 and 86,502.65 is: 129,590.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,585.51 : 167,167.17 = 86,502.65 : x
  2. Step 2: Convert to fraction form
    111,585.51/167,167.17 = 86,502.65/x
  3. Step 3: Cross multiply
    111,585.51x = 167,167.17 × 86,502.65
  4. Step 4: Simplify right side
    111,585.51x = 14,460,402,362.16
  5. Step 5: Solve for x
    x = 14,460,402,362.16/111,585.51
  6. Step 6: Final answer
    x = 129,590.32

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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.