Home / 130,011.16-179,413.20-72,651.40

Finding the Fourth Proportional to 130,011.16, 179,413.20 and 72,651.40

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Solution

The fourth proportional to 130,011.16, 179,413.20 and 72,651.40 is: 100,257.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,011.16 : 179,413.20 = 72,651.40 : x
  2. Step 2: Convert to fraction form
    130,011.16/179,413.20 = 72,651.40/x
  3. Step 3: Cross multiply
    130,011.16x = 179,413.20 × 72,651.40
  4. Step 4: Simplify right side
    130,011.16x = 13,034,620,158.48
  5. Step 5: Solve for x
    x = 13,034,620,158.48/130,011.16
  6. Step 6: Final answer
    x = 100,257.70

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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.