Home / 125,013,602.40-187,221,805.20-76,640,661.60

Finding the Fourth Proportional to 125,013,602.40, 187,221,805.20 and 76,640,661.60

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Solution

The fourth proportional to 125,013,602.40, 187,221,805.20 and 76,640,661.60 is: 114,777,934.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,013,602.40 : 187,221,805.20 = 76,640,661.60 : x
  2. Step 2: Convert to fraction form
    125,013,602.40/187,221,805.20 = 76,640,661.60/x
  3. Step 3: Cross multiply
    125,013,602.40x = 187,221,805.20 × 76,640,661.60
  4. Step 4: Simplify right side
    125,013,602.40x = 14,348,803,016,474,318
  5. Step 5: Solve for x
    x = 14,348,803,016,474,318/125,013,602.40
  6. Step 6: Final answer
    x = 114,777,934.09

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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.