Home / 105,117.60-145,182.96-76,564.48

Finding the Fourth Proportional to 105,117.60, 145,182.96 and 76,564.48

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Solution

The fourth proportional to 105,117.60, 145,182.96 and 76,564.48 is: 105,746.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,117.60 : 145,182.96 = 76,564.48 : x
  2. Step 2: Convert to fraction form
    105,117.60/145,182.96 = 76,564.48/x
  3. Step 3: Cross multiply
    105,117.60x = 145,182.96 × 76,564.48
  4. Step 4: Simplify right side
    105,117.60x = 11,115,857,837.26
  5. Step 5: Solve for x
    x = 11,115,857,837.26/105,117.60
  6. Step 6: Final answer
    x = 105,746.88

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1.5x scale

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.