Home / 143,038.48-197,364.36-86,453.04

Finding the Fourth Proportional to 143,038.48, 197,364.36 and 86,453.04

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Solution

The fourth proportional to 143,038.48, 197,364.36 and 86,453.04 is: 119,287.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,038.48 : 197,364.36 = 86,453.04 : x
  2. Step 2: Convert to fraction form
    143,038.48/197,364.36 = 86,453.04/x
  3. Step 3: Cross multiply
    143,038.48x = 197,364.36 × 86,453.04
  4. Step 4: Simplify right side
    143,038.48x = 17,062,748,909.65
  5. Step 5: Solve for x
    x = 17,062,748,909.65/143,038.48
  6. Step 6: Final answer
    x = 119,287.82

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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.