Home / 107,931.20-161,896.80-98,254.40

Finding the Fourth Proportional to 107,931.20, 161,896.80 and 98,254.40

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Solution

The fourth proportional to 107,931.20, 161,896.80 and 98,254.40 is: 147,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,931.20 : 161,896.80 = 98,254.40 : x
  2. Step 2: Convert to fraction form
    107,931.20/161,896.80 = 98,254.40/x
  3. Step 3: Cross multiply
    107,931.20x = 161,896.80 × 98,254.40
  4. Step 4: Simplify right side
    107,931.20x = 15,907,072,945.92
  5. Step 5: Solve for x
    x = 15,907,072,945.92/107,931.20
  6. Step 6: Final answer
    x = 147,381.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.