Home / 130,113.64-195,285.66-66,978.28

Finding the Fourth Proportional to 130,113.64, 195,285.66 and 66,978.28

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Solution

The fourth proportional to 130,113.64, 195,285.66 and 66,978.28 is: 100,526.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,113.64 : 195,285.66 = 66,978.28 : x
  2. Step 2: Convert to fraction form
    130,113.64/195,285.66 = 66,978.28/x
  3. Step 3: Cross multiply
    130,113.64x = 195,285.66 × 66,978.28
  4. Step 4: Simplify right side
    130,113.64x = 13,079,897,615.46
  5. Step 5: Solve for x
    x = 13,079,897,615.46/130,113.64
  6. Step 6: Final answer
    x = 100,526.72

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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.