Home / 140,287,699.76-193,593,681.50-78,413,795.60

Finding the Fourth Proportional to 140,287,699.76, 193,593,681.50 and 78,413,795.60

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Solution

The fourth proportional to 140,287,699.76, 193,593,681.50 and 78,413,795.60 is: 108,209,168.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,287,699.76 : 193,593,681.50 = 78,413,795.60 : x
  2. Step 2: Convert to fraction form
    140,287,699.76/193,593,681.50 = 78,413,795.60/x
  3. Step 3: Cross multiply
    140,287,699.76x = 193,593,681.50 × 78,413,795.60
  4. Step 4: Simplify right side
    140,287,699.76x = 15,180,415,370,762,114
  5. Step 5: Solve for x
    x = 15,180,415,370,762,114/140,287,699.76
  6. Step 6: Final answer
    x = 108,209,168.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.