Home / 153,120.65-211,237.61-89,420.63

Finding the Fourth Proportional to 153,120.65, 211,237.61 and 89,420.63

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Solution

The fourth proportional to 153,120.65, 211,237.61 and 89,420.63 is: 123,360.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,120.65 : 211,237.61 = 89,420.63 : x
  2. Step 2: Convert to fraction form
    153,120.65/211,237.61 = 89,420.63/x
  3. Step 3: Cross multiply
    153,120.65x = 211,237.61 × 89,420.63
  4. Step 4: Simplify right side
    153,120.65x = 18,888,998,662.60
  5. Step 5: Solve for x
    x = 18,888,998,662.60/153,120.65
  6. Step 6: Final answer
    x = 123,360.23

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1.5x scale

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.