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Finding the Fourth Proportional to 130,061.76, 179,482.48 and 72,699.48

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Solution

The fourth proportional to 130,061.76, 179,482.48 and 72,699.48 is: 100,323.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,061.76 : 179,482.48 = 72,699.48 : x
  2. Step 2: Convert to fraction form
    130,061.76/179,482.48 = 72,699.48/x
  3. Step 3: Cross multiply
    130,061.76x = 179,482.48 × 72,699.48
  4. Step 4: Simplify right side
    130,061.76x = 13,048,282,965.11
  5. Step 5: Solve for x
    x = 13,048,282,965.11/130,061.76
  6. Step 6: Final answer
    x = 100,323.75

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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.