Home / 127,188.38-175,484.40-79,490.18

Finding the Fourth Proportional to 127,188.38, 175,484.40 and 79,490.18

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Solution

The fourth proportional to 127,188.38, 175,484.40 and 79,490.18 is: 109,674.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,188.38 : 175,484.40 = 79,490.18 : x
  2. Step 2: Convert to fraction form
    127,188.38/175,484.40 = 79,490.18/x
  3. Step 3: Cross multiply
    127,188.38x = 175,484.40 × 79,490.18
  4. Step 4: Simplify right side
    127,188.38x = 13,949,286,543.19
  5. Step 5: Solve for x
    x = 13,949,286,543.19/127,188.38
  6. Step 6: Final answer
    x = 109,674.22

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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.