Home / 90,563.04-125,010.56-77,764.84

Finding the Fourth Proportional to 90,563.04, 125,010.56 and 77,764.84

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Solution

The fourth proportional to 90,563.04, 125,010.56 and 77,764.84 is: 107,344.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,563.04 : 125,010.56 = 77,764.84 : x
  2. Step 2: Convert to fraction form
    90,563.04/125,010.56 = 77,764.84/x
  3. Step 3: Cross multiply
    90,563.04x = 125,010.56 × 77,764.84
  4. Step 4: Simplify right side
    90,563.04x = 9,721,426,196.71
  5. Step 5: Solve for x
    x = 9,721,426,196.71/90,563.04
  6. Step 6: Final answer
    x = 107,344.30

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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.