Home / 138,333.48-190,918.47-77,916.06

Finding the Fourth Proportional to 138,333.48, 190,918.47 and 77,916.06

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Solution

The fourth proportional to 138,333.48, 190,918.47 and 77,916.06 is: 107,534.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,333.48 : 190,918.47 = 77,916.06 : x
  2. Step 2: Convert to fraction form
    138,333.48/190,918.47 = 77,916.06/x
  3. Step 3: Cross multiply
    138,333.48x = 190,918.47 × 77,916.06
  4. Step 4: Simplify right side
    138,333.48x = 14,875,614,963.63
  5. Step 5: Solve for x
    x = 14,875,614,963.63/138,333.48
  6. Step 6: Final answer
    x = 107,534.45

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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.