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Finding the Fourth Proportional to 155,600.10, 233,400.15 and 138,978.90

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Solution

The fourth proportional to 155,600.10, 233,400.15 and 138,978.90 is: 208,468.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,600.10 : 233,400.15 = 138,978.90 : x
  2. Step 2: Convert to fraction form
    155,600.10/233,400.15 = 138,978.90/x
  3. Step 3: Cross multiply
    155,600.10x = 233,400.15 × 138,978.90
  4. Step 4: Simplify right side
    155,600.10x = 32,437,696,106.84
  5. Step 5: Solve for x
    x = 32,437,696,106.84/155,600.10
  6. Step 6: Final answer
    x = 208,468.35

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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.