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Finding the Fourth Proportional to 97,312.60, 145,644.90 and 70,582.60

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Solution

The fourth proportional to 97,312.60, 145,644.90 and 70,582.60 is: 105,638.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,312.60 : 145,644.90 = 70,582.60 : x
  2. Step 2: Convert to fraction form
    97,312.60/145,644.90 = 70,582.60/x
  3. Step 3: Cross multiply
    97,312.60x = 145,644.90 × 70,582.60
  4. Step 4: Simplify right side
    97,312.60x = 10,279,995,718.74
  5. Step 5: Solve for x
    x = 10,279,995,718.74/97,312.60
  6. Step 6: Final answer
    x = 105,638.90

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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.