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Finding the Fourth Proportional to 148,851.40, 223,017.90 and 128,115.40

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Solution

The fourth proportional to 148,851.40, 223,017.90 and 128,115.40 is: 191,950.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,851.40 : 223,017.90 = 128,115.40 : x
  2. Step 2: Convert to fraction form
    148,851.40/223,017.90 = 128,115.40/x
  3. Step 3: Cross multiply
    148,851.40x = 223,017.90 × 128,115.40
  4. Step 4: Simplify right side
    148,851.40x = 28,572,027,465.66
  5. Step 5: Solve for x
    x = 28,572,027,465.66/148,851.40
  6. Step 6: Final answer
    x = 191,950.01

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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.