Home / 130,431.15-179,994.58-72,291.59

Finding the Fourth Proportional to 130,431.15, 179,994.58 and 72,291.59

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Solution

The fourth proportional to 130,431.15, 179,994.58 and 72,291.59 is: 99,762.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,431.15 : 179,994.58 = 72,291.59 : x
  2. Step 2: Convert to fraction form
    130,431.15/179,994.58 = 72,291.59/x
  3. Step 3: Cross multiply
    130,431.15x = 179,994.58 × 72,291.59
  4. Step 4: Simplify right side
    130,431.15x = 13,012,094,297.77
  5. Step 5: Solve for x
    x = 13,012,094,297.77/130,431.15
  6. Step 6: Final answer
    x = 99,762.17

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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.