Home / 130,329.03-179,854.47-72,970.77

Finding the Fourth Proportional to 130,329.03, 179,854.47 and 72,970.77

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Solution

The fourth proportional to 130,329.03, 179,854.47 and 72,970.77 is: 100,699.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,329.03 : 179,854.47 = 72,970.77 : x
  2. Step 2: Convert to fraction form
    130,329.03/179,854.47 = 72,970.77/x
  3. Step 3: Cross multiply
    130,329.03x = 179,854.47 × 72,970.77
  4. Step 4: Simplify right side
    130,329.03x = 13,124,119,163.84
  5. Step 5: Solve for x
    x = 13,124,119,163.84/130,329.03
  6. Step 6: Final answer
    x = 100,699.89

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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.