Home / 86,656.10-129,838.35-74,117.30

Finding the Fourth Proportional to 86,656.10, 129,838.35 and 74,117.30

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Solution

The fourth proportional to 86,656.10, 129,838.35 and 74,117.30 is: 111,051.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,656.10 : 129,838.35 = 74,117.30 : x
  2. Step 2: Convert to fraction form
    86,656.10/129,838.35 = 74,117.30/x
  3. Step 3: Cross multiply
    86,656.10x = 129,838.35 × 74,117.30
  4. Step 4: Simplify right side
    86,656.10x = 9,623,267,938.46
  5. Step 5: Solve for x
    x = 9,623,267,938.46/86,656.10
  6. Step 6: Final answer
    x = 111,051.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.