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Finding the Fourth Proportional to 130,117, 179,561.58 and 70,501

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Solution

The fourth proportional to 130,117, 179,561.58 and 70,501 is: 97,291.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,117 : 179,561.58 = 70,501 : x
  2. Step 2: Convert to fraction form
    130,117/179,561.58 = 70,501/x
  3. Step 3: Cross multiply
    130,117x = 179,561.58 × 70,501
  4. Step 4: Simplify right side
    130,117x = 12,659,270,951.58
  5. Step 5: Solve for x
    x = 12,659,270,951.58/130,117
  6. Step 6: Final answer
    x = 97,291.45

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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.