Home / 130,045.68-179,460.90-72,686.34

Finding the Fourth Proportional to 130,045.68, 179,460.90 and 72,686.34

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Solution

The fourth proportional to 130,045.68, 179,460.90 and 72,686.34 is: 100,305.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,045.68 : 179,460.90 = 72,686.34 : x
  2. Step 2: Convert to fraction form
    130,045.68/179,460.90 = 72,686.34/x
  3. Step 3: Cross multiply
    130,045.68x = 179,460.90 × 72,686.34
  4. Step 4: Simplify right side
    130,045.68x = 13,044,355,994.11
  5. Step 5: Solve for x
    x = 13,044,355,994.11/130,045.68
  6. Step 6: Final answer
    x = 100,305.95

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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.