Home / 90,501.87-124,449.70-78,544.45

Finding the Fourth Proportional to 90,501.87, 124,449.70 and 78,544.45

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Solution

The fourth proportional to 90,501.87, 124,449.70 and 78,544.45 is: 108,006.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,501.87 : 124,449.70 = 78,544.45 : x
  2. Step 2: Convert to fraction form
    90,501.87/124,449.70 = 78,544.45/x
  3. Step 3: Cross multiply
    90,501.87x = 124,449.70 × 78,544.45
  4. Step 4: Simplify right side
    90,501.87x = 9,774,833,239.17
  5. Step 5: Solve for x
    x = 9,774,833,239.17/90,501.87
  6. Step 6: Final answer
    x = 108,006.98

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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.