Home / 129,793,313.60-194,689,970.40-78,732,987.20

Finding the Fourth Proportional to 129,793,313.60, 194,689,970.40 and 78,732,987.20

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Solution

The fourth proportional to 129,793,313.60, 194,689,970.40 and 78,732,987.20 is: 118,099,480.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,793,313.60 : 194,689,970.40 = 78,732,987.20 : x
  2. Step 2: Convert to fraction form
    129,793,313.60/194,689,970.40 = 78,732,987.20/x
  3. Step 3: Cross multiply
    129,793,313.60x = 194,689,970.40 × 78,732,987.20
  4. Step 4: Simplify right side
    129,793,313.60x = 15,328,522,947,471,580
  5. Step 5: Solve for x
    x = 15,328,522,947,471,580/129,793,313.60
  6. Step 6: Final answer
    x = 118,099,480.80

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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.