Home / 128,973,004.60-193,459,506.90-100,239,761.20

Finding the Fourth Proportional to 128,973,004.60, 193,459,506.90 and 100,239,761.20

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Solution

The fourth proportional to 128,973,004.60, 193,459,506.90 and 100,239,761.20 is: 150,359,641.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,973,004.60 : 193,459,506.90 = 100,239,761.20 : x
  2. Step 2: Convert to fraction form
    128,973,004.60/193,459,506.90 = 100,239,761.20/x
  3. Step 3: Cross multiply
    128,973,004.60x = 193,459,506.90 × 100,239,761.20
  4. Step 4: Simplify right side
    128,973,004.60x = 19,392,334,773,525,752
  5. Step 5: Solve for x
    x = 19,392,334,773,525,752/128,973,004.60
  6. Step 6: Final answer
    x = 150,359,641.80

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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.