Home / 145,931.40-218,897.10-40,750.20

Finding the Fourth Proportional to 145,931.40, 218,897.10 and 40,750.20

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Solution

The fourth proportional to 145,931.40, 218,897.10 and 40,750.20 is: 61,125.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,931.40 : 218,897.10 = 40,750.20 : x
  2. Step 2: Convert to fraction form
    145,931.40/218,897.10 = 40,750.20/x
  3. Step 3: Cross multiply
    145,931.40x = 218,897.10 × 40,750.20
  4. Step 4: Simplify right side
    145,931.40x = 8,920,100,604.42
  5. Step 5: Solve for x
    x = 8,920,100,604.42/145,931.40
  6. Step 6: Final answer
    x = 61,125.30

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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.