Home / 125,430,013.80-188,145,020.70-99,601,981.20

Finding the Fourth Proportional to 125,430,013.80, 188,145,020.70 and 99,601,981.20

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Solution

The fourth proportional to 125,430,013.80, 188,145,020.70 and 99,601,981.20 is: 149,402,971.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,430,013.80 : 188,145,020.70 = 99,601,981.20 : x
  2. Step 2: Convert to fraction form
    125,430,013.80/188,145,020.70 = 99,601,981.20/x
  3. Step 3: Cross multiply
    125,430,013.80x = 188,145,020.70 × 99,601,981.20
  4. Step 4: Simplify right side
    125,430,013.80x = 18,739,616,814,635,012
  5. Step 5: Solve for x
    x = 18,739,616,814,635,012/125,430,013.80
  6. Step 6: Final answer
    x = 149,402,971.80

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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.