Home / 129,276,077.40-193,914,116.10-80,903,136.60

Finding the Fourth Proportional to 129,276,077.40, 193,914,116.10 and 80,903,136.60

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Solution

The fourth proportional to 129,276,077.40, 193,914,116.10 and 80,903,136.60 is: 121,354,704.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,276,077.40 : 193,914,116.10 = 80,903,136.60 : x
  2. Step 2: Convert to fraction form
    129,276,077.40/193,914,116.10 = 80,903,136.60/x
  3. Step 3: Cross multiply
    129,276,077.40x = 193,914,116.10 × 80,903,136.60
  4. Step 4: Simplify right side
    129,276,077.40x = 15,688,260,223,506,558
  5. Step 5: Solve for x
    x = 15,688,260,223,506,558/129,276,077.40
  6. Step 6: Final answer
    x = 121,354,704.90

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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.