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Finding the Fourth Proportional to 180,552.78, 249,162.67 and 99,980.30

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Solution

The fourth proportional to 180,552.78, 249,162.67 and 99,980.30 is: 137,972.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,552.78 : 249,162.67 = 99,980.30 : x
  2. Step 2: Convert to fraction form
    180,552.78/249,162.67 = 99,980.30/x
  3. Step 3: Cross multiply
    180,552.78x = 249,162.67 × 99,980.30
  4. Step 4: Simplify right side
    180,552.78x = 24,911,358,495.40
  5. Step 5: Solve for x
    x = 24,911,358,495.40/180,552.78
  6. Step 6: Final answer
    x = 137,972.73

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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.