Home / 91,875.60-137,813.40-77,113.35

Finding the Fourth Proportional to 91,875.60, 137,813.40 and 77,113.35

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Solution

The fourth proportional to 91,875.60, 137,813.40 and 77,113.35 is: 115,670.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,875.60 : 137,813.40 = 77,113.35 : x
  2. Step 2: Convert to fraction form
    91,875.60/137,813.40 = 77,113.35/x
  3. Step 3: Cross multiply
    91,875.60x = 137,813.40 × 77,113.35
  4. Step 4: Simplify right side
    91,875.60x = 10,627,252,948.89
  5. Step 5: Solve for x
    x = 10,627,252,948.89/91,875.60
  6. Step 6: Final answer
    x = 115,670.03

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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.