Home / 138,662,931.92-191,352,493.33-76,781,941.88

Finding the Fourth Proportional to 138,662,931.92, 191,352,493.33 and 76,781,941.88

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Solution

The fourth proportional to 138,662,931.92, 191,352,493.33 and 76,781,941.88 is: 105,957,777.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,662,931.92 : 191,352,493.33 = 76,781,941.88 : x
  2. Step 2: Convert to fraction form
    138,662,931.92/191,352,493.33 = 76,781,941.88/x
  3. Step 3: Cross multiply
    138,662,931.92x = 191,352,493.33 × 76,781,941.88
  4. Step 4: Simplify right side
    138,662,931.92x = 14,692,416,020,308,430
  5. Step 5: Solve for x
    x = 14,692,416,020,308,430/138,662,931.92
  6. Step 6: Final answer
    x = 105,957,777.02

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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.