Home / 91,044,812.40-136,567,218.60-81,478,874.40

Finding the Fourth Proportional to 91,044,812.40, 136,567,218.60 and 81,478,874.40

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Solution

The fourth proportional to 91,044,812.40, 136,567,218.60 and 81,478,874.40 is: 122,218,311.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,044,812.40 : 136,567,218.60 = 81,478,874.40 : x
  2. Step 2: Convert to fraction form
    91,044,812.40/136,567,218.60 = 81,478,874.40/x
  3. Step 3: Cross multiply
    91,044,812.40x = 136,567,218.60 × 81,478,874.40
  4. Step 4: Simplify right side
    91,044,812.40x = 11,127,343,251,466,744
  5. Step 5: Solve for x
    x = 11,127,343,251,466,744/91,044,812.40
  6. Step 6: Final answer
    x = 122,218,311.60

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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.