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Finding the Fourth Proportional to 130,142, 179,595.96 and 70,526

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Solution

The fourth proportional to 130,142, 179,595.96 and 70,526 is: 97,325.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,142 : 179,595.96 = 70,526 : x
  2. Step 2: Convert to fraction form
    130,142/179,595.96 = 70,526/x
  3. Step 3: Cross multiply
    130,142x = 179,595.96 × 70,526
  4. Step 4: Simplify right side
    130,142x = 12,666,184,674.96
  5. Step 5: Solve for x
    x = 12,666,184,674.96/130,142
  6. Step 6: Final answer
    x = 97,325.88

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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.