Home / 111,505.86-153,840.40-63,725.18

Finding the Fourth Proportional to 111,505.86, 153,840.40 and 63,725.18

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Solution

The fourth proportional to 111,505.86, 153,840.40 and 63,725.18 is: 87,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,505.86 : 153,840.40 = 63,725.18 : x
  2. Step 2: Convert to fraction form
    111,505.86/153,840.40 = 63,725.18/x
  3. Step 3: Cross multiply
    111,505.86x = 153,840.40 × 63,725.18
  4. Step 4: Simplify right side
    111,505.86x = 9,803,506,252.76
  5. Step 5: Solve for x
    x = 9,803,506,252.76/111,505.86
  6. Step 6: Final answer
    x = 87,919.20

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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.