Home / 145,512,901.80-218,269,352.70-72,740,914.20

Finding the Fourth Proportional to 145,512,901.80, 218,269,352.70 and 72,740,914.20

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Solution

The fourth proportional to 145,512,901.80, 218,269,352.70 and 72,740,914.20 is: 109,111,371.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,512,901.80 : 218,269,352.70 = 72,740,914.20 : x
  2. Step 2: Convert to fraction form
    145,512,901.80/218,269,352.70 = 72,740,914.20/x
  3. Step 3: Cross multiply
    145,512,901.80x = 218,269,352.70 × 72,740,914.20
  4. Step 4: Simplify right side
    145,512,901.80x = 15,877,112,257,240,238
  5. Step 5: Solve for x
    x = 15,877,112,257,240,238/145,512,901.80
  6. Step 6: Final answer
    x = 109,111,371.30

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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.