Home / 138,582.90-191,208.87-84,848.31

Finding the Fourth Proportional to 138,582.90, 191,208.87 and 84,848.31

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Solution

The fourth proportional to 138,582.90, 191,208.87 and 84,848.31 is: 117,068.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,582.90 : 191,208.87 = 84,848.31 : x
  2. Step 2: Convert to fraction form
    138,582.90/191,208.87 = 84,848.31/x
  3. Step 3: Cross multiply
    138,582.90x = 191,208.87 × 84,848.31
  4. Step 4: Simplify right side
    138,582.90x = 16,223,749,476.51
  5. Step 5: Solve for x
    x = 16,223,749,476.51/138,582.90
  6. Step 6: Final answer
    x = 117,068.91

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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.