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Finding the Fourth Proportional to 155,287.80, 232,931.70 and 99,300.60

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Solution

The fourth proportional to 155,287.80, 232,931.70 and 99,300.60 is: 148,950.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,287.80 : 232,931.70 = 99,300.60 : x
  2. Step 2: Convert to fraction form
    155,287.80/232,931.70 = 99,300.60/x
  3. Step 3: Cross multiply
    155,287.80x = 232,931.70 × 99,300.60
  4. Step 4: Simplify right side
    155,287.80x = 23,130,257,569.02
  5. Step 5: Solve for x
    x = 23,130,257,569.02/155,287.80
  6. Step 6: Final answer
    x = 148,950.90

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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.