Home / 105,571,881.05-145,637,424.41-91,613,645.15

Finding the Fourth Proportional to 105,571,881.05, 145,637,424.41 and 91,613,645.15

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Solution

The fourth proportional to 105,571,881.05, 145,637,424.41 and 91,613,645.15 is: 126,381,903.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,571,881.05 : 145,637,424.41 = 91,613,645.15 : x
  2. Step 2: Convert to fraction form
    105,571,881.05/145,637,424.41 = 91,613,645.15/x
  3. Step 3: Cross multiply
    105,571,881.05x = 145,637,424.41 × 91,613,645.15
  4. Step 4: Simplify right side
    105,571,881.05x = 13,342,375,319,271,432
  5. Step 5: Solve for x
    x = 13,342,375,319,271,432/105,571,881.05
  6. Step 6: Final answer
    x = 126,381,903.85

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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.