Home / 111,135.08-153,366.48-63,387.20

Finding the Fourth Proportional to 111,135.08, 153,366.48 and 63,387.20

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Solution

The fourth proportional to 111,135.08, 153,366.48 and 63,387.20 is: 87,474.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,135.08 : 153,366.48 = 63,387.20 : x
  2. Step 2: Convert to fraction form
    111,135.08/153,366.48 = 63,387.20/x
  3. Step 3: Cross multiply
    111,135.08x = 153,366.48 × 63,387.20
  4. Step 4: Simplify right side
    111,135.08x = 9,721,471,741.06
  5. Step 5: Solve for x
    x = 9,721,471,741.06/111,135.08
  6. Step 6: Final answer
    x = 87,474.38

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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.