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Finding the Fourth Proportional to 181,118.62, 249,931.16 and 100,539.78

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Solution

The fourth proportional to 181,118.62, 249,931.16 and 100,539.78 is: 138,737.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,118.62 : 249,931.16 = 100,539.78 : x
  2. Step 2: Convert to fraction form
    181,118.62/249,931.16 = 100,539.78/x
  3. Step 3: Cross multiply
    181,118.62x = 249,931.16 × 100,539.78
  4. Step 4: Simplify right side
    181,118.62x = 25,128,022,089.19
  5. Step 5: Solve for x
    x = 25,128,022,089.19/181,118.62
  6. Step 6: Final answer
    x = 138,737.93

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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.