Home / 130,778.19-179,298.45-128,416.23

Finding the Fourth Proportional to 130,778.19, 179,298.45 and 128,416.23

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Solution

The fourth proportional to 130,778.19, 179,298.45 and 128,416.23 is: 176,060.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,778.19 : 179,298.45 = 128,416.23 : x
  2. Step 2: Convert to fraction form
    130,778.19/179,298.45 = 128,416.23/x
  3. Step 3: Cross multiply
    130,778.19x = 179,298.45 × 128,416.23
  4. Step 4: Simplify right side
    130,778.19x = 23,024,830,993.84
  5. Step 5: Solve for x
    x = 23,024,830,993.84/130,778.19
  6. Step 6: Final answer
    x = 176,060.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.