Home / 145,541,311.30-218,311,966.95-72,769,323.70

Finding the Fourth Proportional to 145,541,311.30, 218,311,966.95 and 72,769,323.70

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Solution

The fourth proportional to 145,541,311.30, 218,311,966.95 and 72,769,323.70 is: 109,153,985.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,541,311.30 : 218,311,966.95 = 72,769,323.70 : x
  2. Step 2: Convert to fraction form
    145,541,311.30/218,311,966.95 = 72,769,323.70/x
  3. Step 3: Cross multiply
    145,541,311.30x = 218,311,966.95 × 72,769,323.70
  4. Step 4: Simplify right side
    145,541,311.30x = 15,886,414,190,568,252
  5. Step 5: Solve for x
    x = 15,886,414,190,568,252/145,541,311.30
  6. Step 6: Final answer
    x = 109,153,985.55

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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.