Home / 131,430.64-181,374.09-74,842.03

Finding the Fourth Proportional to 131,430.64, 181,374.09 and 74,842.03

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Solution

The fourth proportional to 131,430.64, 181,374.09 and 74,842.03 is: 103,281.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,430.64 : 181,374.09 = 74,842.03 : x
  2. Step 2: Convert to fraction form
    131,430.64/181,374.09 = 74,842.03/x
  3. Step 3: Cross multiply
    131,430.64x = 181,374.09 × 74,842.03
  4. Step 4: Simplify right side
    131,430.64x = 13,574,405,085.00
  5. Step 5: Solve for x
    x = 13,574,405,085.00/131,430.64
  6. Step 6: Final answer
    x = 103,281.89

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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.