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Finding the Fourth Proportional to 98,547.62, 147,999.60 and 91,043.10

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Solution

The fourth proportional to 98,547.62, 147,999.60 and 91,043.10 is: 136,729.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,547.62 : 147,999.60 = 91,043.10 : x
  2. Step 2: Convert to fraction form
    98,547.62/147,999.60 = 91,043.10/x
  3. Step 3: Cross multiply
    98,547.62x = 147,999.60 × 91,043.10
  4. Step 4: Simplify right side
    98,547.62x = 13,474,342,382.76
  5. Step 5: Solve for x
    x = 13,474,342,382.76/98,547.62
  6. Step 6: Final answer
    x = 136,729.25

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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.