Home / 111,385.68-153,698.07-63,642.12

Finding the Fourth Proportional to 111,385.68, 153,698.07 and 63,642.12

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Solution

The fourth proportional to 111,385.68, 153,698.07 and 63,642.12 is: 87,818.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,385.68 : 153,698.07 = 63,642.12 : x
  2. Step 2: Convert to fraction form
    111,385.68/153,698.07 = 63,642.12/x
  3. Step 3: Cross multiply
    111,385.68x = 153,698.07 × 63,642.12
  4. Step 4: Simplify right side
    111,385.68x = 9,781,671,014.71
  5. Step 5: Solve for x
    x = 9,781,671,014.71/111,385.68
  6. Step 6: Final answer
    x = 87,818.03

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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.