Home / 115,400.48-159,244.86-66,343.64

Finding the Fourth Proportional to 115,400.48, 159,244.86 and 66,343.64

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Solution

The fourth proportional to 115,400.48, 159,244.86 and 66,343.64 is: 91,549.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,400.48 : 159,244.86 = 66,343.64 : x
  2. Step 2: Convert to fraction form
    115,400.48/159,244.86 = 66,343.64/x
  3. Step 3: Cross multiply
    115,400.48x = 159,244.86 × 66,343.64
  4. Step 4: Simplify right side
    115,400.48x = 10,564,883,663.69
  5. Step 5: Solve for x
    x = 10,564,883,663.69/115,400.48
  6. Step 6: Final answer
    x = 91,549.74

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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.