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Finding the Fourth Proportional to 155,129.76, 214,078.95 and 88,061.76

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Solution

The fourth proportional to 155,129.76, 214,078.95 and 88,061.76 is: 121,525.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,129.76 : 214,078.95 = 88,061.76 : x
  2. Step 2: Convert to fraction form
    155,129.76/214,078.95 = 88,061.76/x
  3. Step 3: Cross multiply
    155,129.76x = 214,078.95 × 88,061.76
  4. Step 4: Simplify right side
    155,129.76x = 18,852,169,115.95
  5. Step 5: Solve for x
    x = 18,852,169,115.95/155,129.76
  6. Step 6: Final answer
    x = 121,525.16

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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.