Home / 138,124.29-190,557.54-77,681.07

Finding the Fourth Proportional to 138,124.29, 190,557.54 and 77,681.07

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Solution

The fourth proportional to 138,124.29, 190,557.54 and 77,681.07 is: 107,169.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,124.29 : 190,557.54 = 77,681.07 : x
  2. Step 2: Convert to fraction form
    138,124.29/190,557.54 = 77,681.07/x
  3. Step 3: Cross multiply
    138,124.29x = 190,557.54 × 77,681.07
  4. Step 4: Simplify right side
    138,124.29x = 14,802,713,603.77
  5. Step 5: Solve for x
    x = 14,802,713,603.77/138,124.29
  6. Step 6: Final answer
    x = 107,169.52

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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.