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Finding the Fourth Proportional to 180,860.76, 249,575.68 and 100,285.30

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Solution

The fourth proportional to 180,860.76, 249,575.68 and 100,285.30 is: 138,386.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,860.76 : 249,575.68 = 100,285.30 : x
  2. Step 2: Convert to fraction form
    180,860.76/249,575.68 = 100,285.30/x
  3. Step 3: Cross multiply
    180,860.76x = 249,575.68 × 100,285.30
  4. Step 4: Simplify right side
    180,860.76x = 25,028,771,440.08
  5. Step 5: Solve for x
    x = 25,028,771,440.08/180,860.76
  6. Step 6: Final answer
    x = 138,386.96

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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.