Home / 109,569.88-151,225-63,622.40

Finding the Fourth Proportional to 109,569.88, 151,225 and 63,622.40

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Solution

The fourth proportional to 109,569.88, 151,225 and 63,622.40 is: 87,809.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,569.88 : 151,225 = 63,622.40 : x
  2. Step 2: Convert to fraction form
    109,569.88/151,225 = 63,622.40/x
  3. Step 3: Cross multiply
    109,569.88x = 151,225 × 63,622.40
  4. Step 4: Simplify right side
    109,569.88x = 9,621,297,440
  5. Step 5: Solve for x
    x = 9,621,297,440/109,569.88
  6. Step 6: Final answer
    x = 87,809.69

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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.