Home / 142,572,820.92-197,110,312.32-105,344,383.79

Finding the Fourth Proportional to 142,572,820.92, 197,110,312.32 and 105,344,383.79

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Solution

The fourth proportional to 142,572,820.92, 197,110,312.32 and 105,344,383.79 is: 145,641,113.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,572,820.92 : 197,110,312.32 = 105,344,383.79 : x
  2. Step 2: Convert to fraction form
    142,572,820.92/197,110,312.32 = 105,344,383.79/x
  3. Step 3: Cross multiply
    142,572,820.92x = 197,110,312.32 × 105,344,383.79
  4. Step 4: Simplify right side
    142,572,820.92x = 20,764,464,389,019,292
  5. Step 5: Solve for x
    x = 20,764,464,389,019,292/142,572,820.92
  6. Step 6: Final answer
    x = 145,641,113.47

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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.