Home / 90,802.52-125,236.56-77,418.08

Finding the Fourth Proportional to 90,802.52, 125,236.56 and 77,418.08

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Solution

The fourth proportional to 90,802.52, 125,236.56 and 77,418.08 is: 106,776.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,802.52 : 125,236.56 = 77,418.08 : x
  2. Step 2: Convert to fraction form
    90,802.52/125,236.56 = 77,418.08/x
  3. Step 3: Cross multiply
    90,802.52x = 125,236.56 × 77,418.08
  4. Step 4: Simplify right side
    90,802.52x = 9,695,574,021.00
  5. Step 5: Solve for x
    x = 9,695,574,021.00/90,802.52
  6. Step 6: Final answer
    x = 106,776.49

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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.