Home / 99,853,325.10-149,779,987.65-81,713,472.30

Finding the Fourth Proportional to 99,853,325.10, 149,779,987.65 and 81,713,472.30

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Solution

The fourth proportional to 99,853,325.10, 149,779,987.65 and 81,713,472.30 is: 122,570,208.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,853,325.10 : 149,779,987.65 = 81,713,472.30 : x
  2. Step 2: Convert to fraction form
    99,853,325.10/149,779,987.65 = 81,713,472.30/x
  3. Step 3: Cross multiply
    99,853,325.10x = 149,779,987.65 × 81,713,472.30
  4. Step 4: Simplify right side
    99,853,325.10x = 12,239,042,871,932,618
  5. Step 5: Solve for x
    x = 12,239,042,871,932,618/99,853,325.10
  6. Step 6: Final answer
    x = 122,570,208.45

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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.