Home / 99,645,639.80-149,492,079.30-51,130,981.40

Finding the Fourth Proportional to 99,645,639.80, 149,492,079.30 and 51,130,981.40

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Solution

The fourth proportional to 99,645,639.80, 149,492,079.30 and 51,130,981.40 is: 76,708,591.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,645,639.80 : 149,492,079.30 = 51,130,981.40 : x
  2. Step 2: Convert to fraction form
    99,645,639.80/149,492,079.30 = 51,130,981.40/x
  3. Step 3: Cross multiply
    99,645,639.80x = 149,492,079.30 × 51,130,981.40
  4. Step 4: Simplify right side
    99,645,639.80x = 7,643,676,726,135,625
  5. Step 5: Solve for x
    x = 7,643,676,726,135,625/99,645,639.80
  6. Step 6: Final answer
    x = 76,708,591.98

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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.