Home / 145,365.18-218,132.01-61,118.70

Finding the Fourth Proportional to 145,365.18, 218,132.01 and 61,118.70

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Solution

The fourth proportional to 145,365.18, 218,132.01 and 61,118.70 is: 91,713.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,365.18 : 218,132.01 = 61,118.70 : x
  2. Step 2: Convert to fraction form
    145,365.18/218,132.01 = 61,118.70/x
  3. Step 3: Cross multiply
    145,365.18x = 218,132.01 × 61,118.70
  4. Step 4: Simplify right side
    145,365.18x = 13,331,944,879.59
  5. Step 5: Solve for x
    x = 13,331,944,879.59/145,365.18
  6. Step 6: Final answer
    x = 91,713.47

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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.