Home / 131,001.60-196,502.40-121,378.80

Finding the Fourth Proportional to 131,001.60, 196,502.40 and 121,378.80

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Solution

The fourth proportional to 131,001.60, 196,502.40 and 121,378.80 is: 182,068.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,001.60 : 196,502.40 = 121,378.80 : x
  2. Step 2: Convert to fraction form
    131,001.60/196,502.40 = 121,378.80/x
  3. Step 3: Cross multiply
    131,001.60x = 196,502.40 × 121,378.80
  4. Step 4: Simplify right side
    131,001.60x = 23,851,225,509.12
  5. Step 5: Solve for x
    x = 23,851,225,509.12/131,001.60
  6. Step 6: Final answer
    x = 182,068.20

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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.