Home / 12,129,136,607.40-18,179,372,187.90-5,141,934,047.40

Finding the Fourth Proportional to 12,129,136,607.40, 18,179,372,187.90 and 5,141,934,047.40

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Solution

The fourth proportional to 12,129,136,607.40, 18,179,372,187.90 and 5,141,934,047.40 is: 7,706,824,965.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129,136,607.40 : 18,179,372,187.90 = 5,141,934,047.40 : x
  2. Step 2: Convert to fraction form
    12,129,136,607.40/18,179,372,187.90 = 5,141,934,047.40/x
  3. Step 3: Cross multiply
    12,129,136,607.40x = 18,179,372,187.90 × 5,141,934,047.40
  4. Step 4: Simplify right side
    12,129,136,607.40x = 93,477,132,813,319,634,944
  5. Step 5: Solve for x
    x = 93,477,132,813,319,634,944/12,129,136,607.40
  6. Step 6: Final answer
    x = 7,706,824,965.29

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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.