Home / 153,727.81-230,661.77-78,900.49

Finding the Fourth Proportional to 153,727.81, 230,661.77 and 78,900.49

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Solution

The fourth proportional to 153,727.81, 230,661.77 and 78,900.49 is: 118,386.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,727.81 : 230,661.77 = 78,900.49 : x
  2. Step 2: Convert to fraction form
    153,727.81/230,661.77 = 78,900.49/x
  3. Step 3: Cross multiply
    153,727.81x = 230,661.77 × 78,900.49
  4. Step 4: Simplify right side
    153,727.81x = 18,199,326,677.27
  5. Step 5: Solve for x
    x = 18,199,326,677.27/153,727.81
  6. Step 6: Final answer
    x = 118,386.69

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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.