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Finding the Fourth Proportional to 130,235.76, 179,726.42 and 70,619.76

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Solution

The fourth proportional to 130,235.76, 179,726.42 and 70,619.76 is: 97,455.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,235.76 : 179,726.42 = 70,619.76 : x
  2. Step 2: Convert to fraction form
    130,235.76/179,726.42 = 70,619.76/x
  3. Step 3: Cross multiply
    130,235.76x = 179,726.42 × 70,619.76
  4. Step 4: Simplify right side
    130,235.76x = 12,692,236,646.06
  5. Step 5: Solve for x
    x = 12,692,236,646.06/130,235.76
  6. Step 6: Final answer
    x = 97,455.85

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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.