Home / 156,656,164.32-216,118,542.96-97,878,789.72

Finding the Fourth Proportional to 156,656,164.32, 216,118,542.96 and 97,878,789.72

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Solution

The fourth proportional to 156,656,164.32, 216,118,542.96 and 97,878,789.72 is: 135,030,890.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,656,164.32 : 216,118,542.96 = 97,878,789.72 : x
  2. Step 2: Convert to fraction form
    156,656,164.32/216,118,542.96 = 97,878,789.72/x
  3. Step 3: Cross multiply
    156,656,164.32x = 216,118,542.96 × 97,878,789.72
  4. Step 4: Simplify right side
    156,656,164.32x = 21,153,421,420,974,628
  5. Step 5: Solve for x
    x = 21,153,421,420,974,628/156,656,164.32
  6. Step 6: Final answer
    x = 135,030,890.82

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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.