Home / 138,817,877.20-208,226,815.80-70,793,429.20

Finding the Fourth Proportional to 138,817,877.20, 208,226,815.80 and 70,793,429.20

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Solution

The fourth proportional to 138,817,877.20, 208,226,815.80 and 70,793,429.20 is: 106,190,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,817,877.20 : 208,226,815.80 = 70,793,429.20 : x
  2. Step 2: Convert to fraction form
    138,817,877.20/208,226,815.80 = 70,793,429.20/x
  3. Step 3: Cross multiply
    138,817,877.20x = 208,226,815.80 × 70,793,429.20
  4. Step 4: Simplify right side
    138,817,877.20x = 14,741,090,341,878,742
  5. Step 5: Solve for x
    x = 14,741,090,341,878,742/138,817,877.20
  6. Step 6: Final answer
    x = 106,190,143.80

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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.