Home / 130,429.07-179,983.47-72,281.90

Finding the Fourth Proportional to 130,429.07, 179,983.47 and 72,281.90

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Solution

The fourth proportional to 130,429.07, 179,983.47 and 72,281.90 is: 99,744.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,429.07 : 179,983.47 = 72,281.90 : x
  2. Step 2: Convert to fraction form
    130,429.07/179,983.47 = 72,281.90/x
  3. Step 3: Cross multiply
    130,429.07x = 179,983.47 × 72,281.90
  4. Step 4: Simplify right side
    130,429.07x = 13,009,547,180.19
  5. Step 5: Solve for x
    x = 13,009,547,180.19/130,429.07
  6. Step 6: Final answer
    x = 99,744.23

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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.