Home / 115,080.72-158,901.48-90,001.68

Finding the Fourth Proportional to 115,080.72, 158,901.48 and 90,001.68

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Solution

The fourth proportional to 115,080.72, 158,901.48 and 90,001.68 is: 124,272.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,080.72 : 158,901.48 = 90,001.68 : x
  2. Step 2: Convert to fraction form
    115,080.72/158,901.48 = 90,001.68/x
  3. Step 3: Cross multiply
    115,080.72x = 158,901.48 × 90,001.68
  4. Step 4: Simplify right side
    115,080.72x = 14,301,400,154.49
  5. Step 5: Solve for x
    x = 14,301,400,154.49/115,080.72
  6. Step 6: Final answer
    x = 124,272.77

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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.