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Finding the Fourth Proportional to 130,146.50, 179,602.29 and 70,530.50

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Solution

The fourth proportional to 130,146.50, 179,602.29 and 70,530.50 is: 97,332.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,146.50 : 179,602.29 = 70,530.50 : x
  2. Step 2: Convert to fraction form
    130,146.50/179,602.29 = 70,530.50/x
  3. Step 3: Cross multiply
    130,146.50x = 179,602.29 × 70,530.50
  4. Step 4: Simplify right side
    130,146.50x = 12,667,439,314.85
  5. Step 5: Solve for x
    x = 12,667,439,314.85/130,146.50
  6. Step 6: Final answer
    x = 97,332.16

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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.