Home / 143,390,609.92-197,845,029.36-81,506,076.64

Finding the Fourth Proportional to 143,390,609.92, 197,845,029.36 and 81,506,076.64

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Solution

The fourth proportional to 143,390,609.92, 197,845,029.36 and 81,506,076.64 is: 112,459,052.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,390,609.92 : 197,845,029.36 = 81,506,076.64 : x
  2. Step 2: Convert to fraction form
    143,390,609.92/197,845,029.36 = 81,506,076.64/x
  3. Step 3: Cross multiply
    143,390,609.92x = 197,845,029.36 × 81,506,076.64
  4. Step 4: Simplify right side
    143,390,609.92x = 16,125,572,125,859,212
  5. Step 5: Solve for x
    x = 16,125,572,125,859,212/143,390,609.92
  6. Step 6: Final answer
    x = 112,459,052.48

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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.