Home / 130,909.60-196,364.40-47,792.80

Finding the Fourth Proportional to 130,909.60, 196,364.40 and 47,792.80

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Solution

The fourth proportional to 130,909.60, 196,364.40 and 47,792.80 is: 71,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,909.60 : 196,364.40 = 47,792.80 : x
  2. Step 2: Convert to fraction form
    130,909.60/196,364.40 = 47,792.80/x
  3. Step 3: Cross multiply
    130,909.60x = 196,364.40 × 47,792.80
  4. Step 4: Simplify right side
    130,909.60x = 9,384,804,496.32
  5. Step 5: Solve for x
    x = 9,384,804,496.32/130,909.60
  6. Step 6: Final answer
    x = 71,689.20

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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.