Home / 138,317.03-190,875.62-77,888.40

Finding the Fourth Proportional to 138,317.03, 190,875.62 and 77,888.40

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Solution

The fourth proportional to 138,317.03, 190,875.62 and 77,888.40 is: 107,484.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,317.03 : 190,875.62 = 77,888.40 : x
  2. Step 2: Convert to fraction form
    138,317.03/190,875.62 = 77,888.40/x
  3. Step 3: Cross multiply
    138,317.03x = 190,875.62 × 77,888.40
  4. Step 4: Simplify right side
    138,317.03x = 14,866,996,119.75
  5. Step 5: Solve for x
    x = 14,866,996,119.75/138,317.03
  6. Step 6: Final answer
    x = 107,484.93

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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.