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Finding the Fourth Proportional to 155,113.20, 232,669.80 and 139,366.80

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Solution

The fourth proportional to 155,113.20, 232,669.80 and 139,366.80 is: 209,050.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,113.20 : 232,669.80 = 139,366.80 : x
  2. Step 2: Convert to fraction form
    155,113.20/232,669.80 = 139,366.80/x
  3. Step 3: Cross multiply
    155,113.20x = 232,669.80 × 139,366.80
  4. Step 4: Simplify right side
    155,113.20x = 32,426,445,482.64
  5. Step 5: Solve for x
    x = 32,426,445,482.64/155,113.20
  6. Step 6: Final answer
    x = 209,050.20

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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.