Home / 108,985.40-150,404.28-61,238.60

Finding the Fourth Proportional to 108,985.40, 150,404.28 and 61,238.60

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Solution

The fourth proportional to 108,985.40, 150,404.28 and 61,238.60 is: 84,511.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,985.40 : 150,404.28 = 61,238.60 : x
  2. Step 2: Convert to fraction form
    108,985.40/150,404.28 = 61,238.60/x
  3. Step 3: Cross multiply
    108,985.40x = 150,404.28 × 61,238.60
  4. Step 4: Simplify right side
    108,985.40x = 9,210,547,541.21
  5. Step 5: Solve for x
    x = 9,210,547,541.21/108,985.40
  6. Step 6: Final answer
    x = 84,511.76

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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.