Home / 129,482,082.96-178,683,189.12-70,743,486.84

Finding the Fourth Proportional to 129,482,082.96, 178,683,189.12 and 70,743,486.84

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Solution

The fourth proportional to 129,482,082.96, 178,683,189.12 and 70,743,486.84 is: 97,624,872.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,482,082.96 : 178,683,189.12 = 70,743,486.84 : x
  2. Step 2: Convert to fraction form
    129,482,082.96/178,683,189.12 = 70,743,486.84/x
  3. Step 3: Cross multiply
    129,482,082.96x = 178,683,189.12 × 70,743,486.84
  4. Step 4: Simplify right side
    129,482,082.96x = 12,640,671,838,039,952
  5. Step 5: Solve for x
    x = 12,640,671,838,039,952/129,482,082.96
  6. Step 6: Final answer
    x = 97,624,872.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.