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Finding the Fourth Proportional to 98,754.80, 148,215.15 and 42,637.32

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Solution

The fourth proportional to 98,754.80, 148,215.15 and 42,637.32 is: 63,991.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,754.80 : 148,215.15 = 42,637.32 : x
  2. Step 2: Convert to fraction form
    98,754.80/148,215.15 = 42,637.32/x
  3. Step 3: Cross multiply
    98,754.80x = 148,215.15 × 42,637.32
  4. Step 4: Simplify right side
    98,754.80x = 6,319,496,779.40
  5. Step 5: Solve for x
    x = 6,319,496,779.40/98,754.80
  6. Step 6: Final answer
    x = 63,991.80

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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.