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Finding the Fourth Proportional to 153,762.80, 212,216.03 and 93,321.77

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Solution

The fourth proportional to 153,762.80, 212,216.03 and 93,321.77 is: 128,798.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,762.80 : 212,216.03 = 93,321.77 : x
  2. Step 2: Convert to fraction form
    153,762.80/212,216.03 = 93,321.77/x
  3. Step 3: Cross multiply
    153,762.80x = 212,216.03 × 93,321.77
  4. Step 4: Simplify right side
    153,762.80x = 19,804,374,014.28
  5. Step 5: Solve for x
    x = 19,804,374,014.28/153,762.80
  6. Step 6: Final answer
    x = 128,798.22

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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.