Home / 144,129,969.02-198,899,549.05-78,050,581.21

Finding the Fourth Proportional to 144,129,969.02, 198,899,549.05 and 78,050,581.21

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Solution

The fourth proportional to 144,129,969.02, 198,899,549.05 and 78,050,581.21 is: 107,709,905.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,129,969.02 : 198,899,549.05 = 78,050,581.21 : x
  2. Step 2: Convert to fraction form
    144,129,969.02/198,899,549.05 = 78,050,581.21/x
  3. Step 3: Cross multiply
    144,129,969.02x = 198,899,549.05 × 78,050,581.21
  4. Step 4: Simplify right side
    144,129,969.02x = 15,524,225,405,759,402
  5. Step 5: Solve for x
    x = 15,524,225,405,759,402/144,129,969.02
  6. Step 6: Final answer
    x = 107,709,905.94

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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.