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Finding the Fourth Proportional to 145,899.80, 201,507.80 and 98,070.12

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Solution

The fourth proportional to 145,899.80, 201,507.80 and 98,070.12 is: 135,448.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,899.80 : 201,507.80 = 98,070.12 : x
  2. Step 2: Convert to fraction form
    145,899.80/201,507.80 = 98,070.12/x
  3. Step 3: Cross multiply
    145,899.80x = 201,507.80 × 98,070.12
  4. Step 4: Simplify right side
    145,899.80x = 19,761,894,126.94
  5. Step 5: Solve for x
    x = 19,761,894,126.94/145,899.80
  6. Step 6: Final answer
    x = 135,448.40

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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.