Home / 90,185.04-124,440.84-56,627.28

Finding the Fourth Proportional to 90,185.04, 124,440.84 and 56,627.28

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Solution

The fourth proportional to 90,185.04, 124,440.84 and 56,627.28 is: 78,136.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,185.04 : 124,440.84 = 56,627.28 : x
  2. Step 2: Convert to fraction form
    90,185.04/124,440.84 = 56,627.28/x
  3. Step 3: Cross multiply
    90,185.04x = 124,440.84 × 56,627.28
  4. Step 4: Simplify right side
    90,185.04x = 7,046,746,290.12
  5. Step 5: Solve for x
    x = 7,046,746,290.12/90,185.04
  6. Step 6: Final answer
    x = 78,136.53

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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.