Home / 123,220.42-170,031.54-90,972.16

Finding the Fourth Proportional to 123,220.42, 170,031.54 and 90,972.16

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Solution

The fourth proportional to 123,220.42, 170,031.54 and 90,972.16 is: 125,532.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,220.42 : 170,031.54 = 90,972.16 : x
  2. Step 2: Convert to fraction form
    123,220.42/170,031.54 = 90,972.16/x
  3. Step 3: Cross multiply
    123,220.42x = 170,031.54 × 90,972.16
  4. Step 4: Simplify right side
    123,220.42x = 15,468,136,461.93
  5. Step 5: Solve for x
    x = 15,468,136,461.93/123,220.42
  6. Step 6: Final answer
    x = 125,532.25

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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.