Home / 111,915.12-154,457.63-64,159.23

Finding the Fourth Proportional to 111,915.12, 154,457.63 and 64,159.23

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Solution

The fourth proportional to 111,915.12, 154,457.63 and 64,159.23 is: 88,548.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,915.12 : 154,457.63 = 64,159.23 : x
  2. Step 2: Convert to fraction form
    111,915.12/154,457.63 = 64,159.23/x
  3. Step 3: Cross multiply
    111,915.12x = 154,457.63 × 64,159.23
  4. Step 4: Simplify right side
    111,915.12x = 9,909,882,608.42
  5. Step 5: Solve for x
    x = 9,909,882,608.42/111,915.12
  6. Step 6: Final answer
    x = 88,548.20

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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.