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Finding the Fourth Proportional to 130,089, 179,523.90 and 70,473

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Solution

The fourth proportional to 130,089, 179,523.90 and 70,473 is: 97,253.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,089 : 179,523.90 = 70,473 : x
  2. Step 2: Convert to fraction form
    130,089/179,523.90 = 70,473/x
  3. Step 3: Cross multiply
    130,089x = 179,523.90 × 70,473
  4. Step 4: Simplify right side
    130,089x = 12,651,587,804.70
  5. Step 5: Solve for x
    x = 12,651,587,804.70/130,089
  6. Step 6: Final answer
    x = 97,253.33

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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.