Home / 128,417,999.30-192,626,998.95-73,998,440.90

Finding the Fourth Proportional to 128,417,999.30, 192,626,998.95 and 73,998,440.90

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Solution

The fourth proportional to 128,417,999.30, 192,626,998.95 and 73,998,440.90 is: 110,997,661.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,417,999.30 : 192,626,998.95 = 73,998,440.90 : x
  2. Step 2: Convert to fraction form
    128,417,999.30/192,626,998.95 = 73,998,440.90/x
  3. Step 3: Cross multiply
    128,417,999.30x = 192,626,998.95 × 73,998,440.90
  4. Step 4: Simplify right side
    128,417,999.30x = 14,254,097,597,545,938
  5. Step 5: Solve for x
    x = 14,254,097,597,545,938/128,417,999.30
  6. Step 6: Final answer
    x = 110,997,661.35

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1.5x scale

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.