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Finding the Fourth Proportional to 180,957.08, 249,720.48 and 100,396.88

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Solution

The fourth proportional to 180,957.08, 249,720.48 and 100,396.88 is: 138,547.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,957.08 : 249,720.48 = 100,396.88 : x
  2. Step 2: Convert to fraction form
    180,957.08/249,720.48 = 100,396.88/x
  3. Step 3: Cross multiply
    180,957.08x = 249,720.48 × 100,396.88
  4. Step 4: Simplify right side
    180,957.08x = 25,071,157,064.10
  5. Step 5: Solve for x
    x = 25,071,157,064.10/180,957.08
  6. Step 6: Final answer
    x = 138,547.53

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1.5x scale

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.