Home / 135,304.34-186,715.40-74,877.53

Finding the Fourth Proportional to 135,304.34, 186,715.40 and 74,877.53

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Solution

The fourth proportional to 135,304.34, 186,715.40 and 74,877.53 is: 103,328.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,304.34 : 186,715.40 = 74,877.53 : x
  2. Step 2: Convert to fraction form
    135,304.34/186,715.40 = 74,877.53/x
  3. Step 3: Cross multiply
    135,304.34x = 186,715.40 × 74,877.53
  4. Step 4: Simplify right side
    135,304.34x = 13,980,788,259.07
  5. Step 5: Solve for x
    x = 13,980,788,259.07/135,304.34
  6. Step 6: Final answer
    x = 103,328.45

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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.