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Finding the Fourth Proportional to 145,492.70, 218,292.35 and 61,274.06

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Solution

The fourth proportional to 145,492.70, 218,292.35 and 61,274.06 is: 91,933.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,492.70 : 218,292.35 = 61,274.06 : x
  2. Step 2: Convert to fraction form
    145,492.70/218,292.35 = 61,274.06/x
  3. Step 3: Cross multiply
    145,492.70x = 218,292.35 × 61,274.06
  4. Step 4: Simplify right side
    145,492.70x = 13,375,657,153.61
  5. Step 5: Solve for x
    x = 13,375,657,153.61/145,492.70
  6. Step 6: Final answer
    x = 91,933.53

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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.