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Finding the Fourth Proportional to 130,477.16, 180,062.72 and 73,887.32

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Solution

The fourth proportional to 130,477.16, 180,062.72 and 73,887.32 is: 101,966.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,477.16 : 180,062.72 = 73,887.32 : x
  2. Step 2: Convert to fraction form
    130,477.16/180,062.72 = 73,887.32/x
  3. Step 3: Cross multiply
    130,477.16x = 180,062.72 × 73,887.32
  4. Step 4: Simplify right side
    130,477.16x = 13,304,351,812.71
  5. Step 5: Solve for x
    x = 13,304,351,812.71/130,477.16
  6. Step 6: Final answer
    x = 101,966.90

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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.