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Finding the Fourth Proportional to 130,040.31, 179,455.85 and 70,424.31

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Solution

The fourth proportional to 130,040.31, 179,455.85 and 70,424.31 is: 97,185.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,040.31 : 179,455.85 = 70,424.31 : x
  2. Step 2: Convert to fraction form
    130,040.31/179,455.85 = 70,424.31/x
  3. Step 3: Cross multiply
    130,040.31x = 179,455.85 × 70,424.31
  4. Step 4: Simplify right side
    130,040.31x = 12,638,054,411.71
  5. Step 5: Solve for x
    x = 12,638,054,411.71/130,040.31
  6. Step 6: Final answer
    x = 97,185.67

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1.5x scale

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.