Home / 121,064,138.40-181,596,207.60-99,806,498.40

Finding the Fourth Proportional to 121,064,138.40, 181,596,207.60 and 99,806,498.40

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Solution

The fourth proportional to 121,064,138.40, 181,596,207.60 and 99,806,498.40 is: 149,709,747.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,064,138.40 : 181,596,207.60 = 99,806,498.40 : x
  2. Step 2: Convert to fraction form
    121,064,138.40/181,596,207.60 = 99,806,498.40/x
  3. Step 3: Cross multiply
    121,064,138.40x = 181,596,207.60 × 99,806,498.40
  4. Step 4: Simplify right side
    121,064,138.40x = 18,124,481,603,275,468
  5. Step 5: Solve for x
    x = 18,124,481,603,275,468/121,064,138.40
  6. Step 6: Final answer
    x = 149,709,747.60

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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.