Home / 138,230.64-190,758.63-77,802.18

Finding the Fourth Proportional to 138,230.64, 190,758.63 and 77,802.18

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Solution

The fourth proportional to 138,230.64, 190,758.63 and 77,802.18 is: 107,367.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,230.64 : 190,758.63 = 77,802.18 : x
  2. Step 2: Convert to fraction form
    138,230.64/190,758.63 = 77,802.18/x
  3. Step 3: Cross multiply
    138,230.64x = 190,758.63 × 77,802.18
  4. Step 4: Simplify right side
    138,230.64x = 14,841,437,267.81
  5. Step 5: Solve for x
    x = 14,841,437,267.81/138,230.64
  6. Step 6: Final answer
    x = 107,367.20

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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.