Home / 249,780.70-374,671.05-81,316.90

Finding the Fourth Proportional to 249,780.70, 374,671.05 and 81,316.90

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Solution

The fourth proportional to 249,780.70, 374,671.05 and 81,316.90 is: 121,975.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,780.70 : 374,671.05 = 81,316.90 : x
  2. Step 2: Convert to fraction form
    249,780.70/374,671.05 = 81,316.90/x
  3. Step 3: Cross multiply
    249,780.70x = 374,671.05 × 81,316.90
  4. Step 4: Simplify right side
    249,780.70x = 30,467,088,305.75
  5. Step 5: Solve for x
    x = 30,467,088,305.75/249,780.70
  6. Step 6: Final answer
    x = 121,975.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.