Home / 155,895.60-215,130.69-98,565.78

Finding the Fourth Proportional to 155,895.60, 215,130.69 and 98,565.78

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Solution

The fourth proportional to 155,895.60, 215,130.69 and 98,565.78 is: 136,017.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,895.60 : 215,130.69 = 98,565.78 : x
  2. Step 2: Convert to fraction form
    155,895.60/215,130.69 = 98,565.78/x
  3. Step 3: Cross multiply
    155,895.60x = 215,130.69 × 98,565.78
  4. Step 4: Simplify right side
    155,895.60x = 21,204,524,261.79
  5. Step 5: Solve for x
    x = 21,204,524,261.79/155,895.60
  6. Step 6: Final answer
    x = 136,017.46

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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.