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Finding the Fourth Proportional to 97,363.60, 145,721.40 and 70,633.60

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Solution

The fourth proportional to 97,363.60, 145,721.40 and 70,633.60 is: 105,715.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,363.60 : 145,721.40 = 70,633.60 : x
  2. Step 2: Convert to fraction form
    97,363.60/145,721.40 = 70,633.60/x
  3. Step 3: Cross multiply
    97,363.60x = 145,721.40 × 70,633.60
  4. Step 4: Simplify right side
    97,363.60x = 10,292,827,079.04
  5. Step 5: Solve for x
    x = 10,292,827,079.04/97,363.60
  6. Step 6: Final answer
    x = 105,715.35

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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.