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Finding the Fourth Proportional to 180,888.58, 249,609.76 and 100,315.86

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Solution

The fourth proportional to 180,888.58, 249,609.76 and 100,315.86 is: 138,426.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,888.58 : 249,609.76 = 100,315.86 : x
  2. Step 2: Convert to fraction form
    180,888.58/249,609.76 = 100,315.86/x
  3. Step 3: Cross multiply
    180,888.58x = 249,609.76 × 100,315.86
  4. Step 4: Simplify right side
    180,888.58x = 25,039,817,738.79
  5. Step 5: Solve for x
    x = 25,039,817,738.79/180,888.58
  6. Step 6: Final answer
    x = 138,426.75

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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.