Home / 421,076.48-631,795.65-136,854.16

Finding the Fourth Proportional to 421,076.48, 631,795.65 and 136,854.16

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Solution

The fourth proportional to 421,076.48, 631,795.65 and 136,854.16 is: 205,340.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,076.48 : 631,795.65 = 136,854.16 : x
  2. Step 2: Convert to fraction form
    421,076.48/631,795.65 = 136,854.16/x
  3. Step 3: Cross multiply
    421,076.48x = 631,795.65 × 136,854.16
  4. Step 4: Simplify right side
    421,076.48x = 86,463,860,879.71
  5. Step 5: Solve for x
    x = 86,463,860,879.71/421,076.48
  6. Step 6: Final answer
    x = 205,340.04

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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.