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Finding the Fourth Proportional to 145,710.40, 201,095.04 and 88,379.68

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Solution

The fourth proportional to 145,710.40, 201,095.04 and 88,379.68 is: 121,972.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,710.40 : 201,095.04 = 88,379.68 : x
  2. Step 2: Convert to fraction form
    145,710.40/201,095.04 = 88,379.68/x
  3. Step 3: Cross multiply
    145,710.40x = 201,095.04 × 88,379.68
  4. Step 4: Simplify right side
    145,710.40x = 17,772,715,284.79
  5. Step 5: Solve for x
    x = 17,772,715,284.79/145,710.40
  6. Step 6: Final answer
    x = 121,972.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.