Home / 98,315.32-147,243.34-90,376.51

Finding the Fourth Proportional to 98,315.32, 147,243.34 and 90,376.51

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Solution

The fourth proportional to 98,315.32, 147,243.34 and 90,376.51 is: 135,353.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,315.32 : 147,243.34 = 90,376.51 : x
  2. Step 2: Convert to fraction form
    98,315.32/147,243.34 = 90,376.51/x
  3. Step 3: Cross multiply
    98,315.32x = 147,243.34 × 90,376.51
  4. Step 4: Simplify right side
    98,315.32x = 13,307,338,001.84
  5. Step 5: Solve for x
    x = 13,307,338,001.84/98,315.32
  6. Step 6: Final answer
    x = 135,353.66

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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.