Home / 130,394.04-179,935.68-72,239.28

Finding the Fourth Proportional to 130,394.04, 179,935.68 and 72,239.28

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Solution

The fourth proportional to 130,394.04, 179,935.68 and 72,239.28 is: 99,685.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,394.04 : 179,935.68 = 72,239.28 : x
  2. Step 2: Convert to fraction form
    130,394.04/179,935.68 = 72,239.28/x
  3. Step 3: Cross multiply
    130,394.04x = 179,935.68 × 72,239.28
  4. Step 4: Simplify right side
    130,394.04x = 12,998,423,969.51
  5. Step 5: Solve for x
    x = 12,998,423,969.51/130,394.04
  6. Step 6: Final answer
    x = 99,685.72

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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.