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Finding the Fourth Proportional to 145,754.40, 218,631.60 and 93,223.20

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Solution

The fourth proportional to 145,754.40, 218,631.60 and 93,223.20 is: 139,834.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,754.40 : 218,631.60 = 93,223.20 : x
  2. Step 2: Convert to fraction form
    145,754.40/218,631.60 = 93,223.20/x
  3. Step 3: Cross multiply
    145,754.40x = 218,631.60 × 93,223.20
  4. Step 4: Simplify right side
    145,754.40x = 20,381,537,373.12
  5. Step 5: Solve for x
    x = 20,381,537,373.12/145,754.40
  6. Step 6: Final answer
    x = 139,834.80

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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.