Home / 138,656.36-191,345.63-74,994

Finding the Fourth Proportional to 138,656.36, 191,345.63 and 74,994

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Solution

The fourth proportional to 138,656.36, 191,345.63 and 74,994 is: 103,491.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,656.36 : 191,345.63 = 74,994 : x
  2. Step 2: Convert to fraction form
    138,656.36/191,345.63 = 74,994/x
  3. Step 3: Cross multiply
    138,656.36x = 191,345.63 × 74,994
  4. Step 4: Simplify right side
    138,656.36x = 14,349,773,801.25
  5. Step 5: Solve for x
    x = 14,349,773,801.25/138,656.36
  6. Step 6: Final answer
    x = 103,491.64

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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.