Home / 155,411.67-214,447.93-87,426.35

Finding the Fourth Proportional to 155,411.67, 214,447.93 and 87,426.35

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Solution

The fourth proportional to 155,411.67, 214,447.93 and 87,426.35 is: 120,637.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,411.67 : 214,447.93 = 87,426.35 : x
  2. Step 2: Convert to fraction form
    155,411.67/214,447.93 = 87,426.35/x
  3. Step 3: Cross multiply
    155,411.67x = 214,447.93 × 87,426.35
  4. Step 4: Simplify right side
    155,411.67x = 18,748,398,494.15
  5. Step 5: Solve for x
    x = 18,748,398,494.15/155,411.67
  6. Step 6: Final answer
    x = 120,637.01

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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.