Home / 142,213.27-196,237.60-78,547.27

Finding the Fourth Proportional to 142,213.27, 196,237.60 and 78,547.27

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Solution

The fourth proportional to 142,213.27, 196,237.60 and 78,547.27 is: 108,386.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,213.27 : 196,237.60 = 78,547.27 : x
  2. Step 2: Convert to fraction form
    142,213.27/196,237.60 = 78,547.27/x
  3. Step 3: Cross multiply
    142,213.27x = 196,237.60 × 78,547.27
  4. Step 4: Simplify right side
    142,213.27x = 15,413,927,751.35
  5. Step 5: Solve for x
    x = 15,413,927,751.35/142,213.27
  6. Step 6: Final answer
    x = 108,386.00

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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.