Home / 130,413.04-179,959.80-76,700.08

Finding the Fourth Proportional to 130,413.04, 179,959.80 and 76,700.08

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Solution

The fourth proportional to 130,413.04, 179,959.80 and 76,700.08 is: 105,840.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,413.04 : 179,959.80 = 76,700.08 : x
  2. Step 2: Convert to fraction form
    130,413.04/179,959.80 = 76,700.08/x
  3. Step 3: Cross multiply
    130,413.04x = 179,959.80 × 76,700.08
  4. Step 4: Simplify right side
    130,413.04x = 13,802,931,056.78
  5. Step 5: Solve for x
    x = 13,802,931,056.78/130,413.04
  6. Step 6: Final answer
    x = 105,840.11

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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.