Home / 138,662,871.54-191,352,410.10-76,781,881.50

Finding the Fourth Proportional to 138,662,871.54, 191,352,410.10 and 76,781,881.50

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Solution

The fourth proportional to 138,662,871.54, 191,352,410.10 and 76,781,881.50 is: 105,957,693.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,662,871.54 : 191,352,410.10 = 76,781,881.50 : x
  2. Step 2: Convert to fraction form
    138,662,871.54/191,352,410.10 = 76,781,881.50/x
  3. Step 3: Cross multiply
    138,662,871.54x = 191,352,410.10 × 76,781,881.50
  4. Step 4: Simplify right side
    138,662,871.54x = 14,692,398,077,037,602
  5. Step 5: Solve for x
    x = 14,692,398,077,037,602/138,662,871.54
  6. Step 6: Final answer
    x = 105,957,693.75

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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.